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• CBSE×
• Class 9×
• Mathematics×
• Surface Areas And Volumes×
• Surface Area Of A Cone×

# Surface Area Of A Cone Free Doubts and Solutions

## A conical tent is to accomodate 11 person.Each person must have 4 square metres of space on the ground and 20 cubic metres of air to breath.Find the height of the tent

Asked by hridhyavijay 16th February 2019, 10:34 PM

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## R=35 h=12 find curved surface of cone

Asked by Abhishekvedic8873 28th August 2018, 8:38 PM

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## A rocket is in the form of a cylinder surmounted by a cone. The cylinder is of radius 9 m and height 17 m and the cone has the height 12 m.  What is the surface area of the rocket?

Asked by Topperlearning User 26th October 2017, 11:45 AM

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## The toy is in the form of a cylinder surmounted by a cone. The cylinder is of diameter 30 cm and height 23 cm and the cone has slant height 17 cm. Calculate the surface area of the toy.

Asked by Topperlearning User 24th October 2017, 3:20 PM

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## Calculate the length of 4 m wide tarpaulin required to make conical tent of slant height 14 m and base diameter 16 m.

Asked by Topperlearning User 17th October 2017, 10:02 AM

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## The slant height and altitude of a conical tomb are 15 m and 12 m respectively. Find the cost of white-washing its curved surface at the rate of Rs. 70 per m2.

Asked by Topperlearning User 17th October 2017, 9:56 AM

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## The curved area of a cone is 792 cm2 and its radius and slant height are in the ratio 4:7. Calculate its radius.

Asked by Topperlearning User 17th October 2017, 9:51 AM

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## A conical tent is 6 m high with radius of base as 8 m. Find the cost of cloth required to make the tent, if one square meter of cloth costs Rs. 28.

Asked by Topperlearning User 17th October 2017, 9:48 AM

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## Find the length of 2 m wide tarpaulin required to make conical tent of height 6 m and base diameter 16 m?

Asked by Topperlearning User 17th October 2017, 9:42 AM

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## A pile of sand is in the shape of a right cone. The circumference of the base is 88 m and its slant height is 7 m. Find the lateral surface area of the pile of sand.

Asked by Topperlearning User 17th October 2017, 9:36 AM

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## A joker’s cap is in the form of a right circular cone of base radius 3 dm and height 4 dm. Find the area of the sheet required to make 35 such caps.

Asked by Topperlearning User 17th October 2017, 9:16 AM

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## The circumference of the base of the cone of slant height 35 cm is 88 cm. Find its curved surface area.

Asked by Topperlearning User 17th October 2017, 9:12 AM

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## A building is cylindrical to a height of 9 m and conical above it. If the base radius is 15 m and height of the cone is 8 m, find the area of the building.

Asked by Topperlearning User 17th October 2017, 9:06 AM

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## A circus tent is cylindrical upto a height of 11 m and conical above it. If the diameter of the base is 24 m and the height of the cone is 5 m, find the length of the canvas required to make the tent if the width of the canvas is 5 m.

Asked by Topperlearning User 17th October 2017, 8:59 AM

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## An isosceles triangle with a base radius of 0.4 m and an altitude of 0.3 m is revolved about a line through the vertex and perpendicular to the base. Calculate the lateral surface area of the solid so generated.

Asked by Topperlearning User 17th October 2017, 8:23 AM

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## The area of the base of a right circular cone is 616 cm2 and its slant height is 9 cm. Find its total surface area.

Asked by Topperlearning User 17th October 2017, 8:08 AM

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## A right circular cone is formed by bending a semicircular piece of paper of radius 8 cm. Determine the curved surface area of the cone.

Asked by Topperlearning User 17th October 2017, 8:03 AM

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## I want all three answers from figure I.e4,5,6 figure is somewhat blurd so please see carefully and answer

Asked by md775016 28th May 2017, 3:41 PM

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## the height of a solid cone is 12cm and the radius of circular base is 32cm.a plane parralel to base of the cone cuts through the cone 9cm above the vertex of cone .find the area of the base of new cone so formed?

Asked by Hrithik 7th January 2017, 10:55 AM

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## IF THE RADIUS AND HEIGHT OF A CONE BOTH ARE INCREASED BY 10%,THEN THE VOLUME OF THE CONE IS INCREASED BY:

Asked by vaishnavi 4th April 2016, 1:46 PM

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## Pls pls pls pls pls sir list all the important question of all the chapters which can come in exam. kindly post all questions

Asked by Snehal Ambekar 10th March 2016, 6:52 PM

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## A conical tent is 10 m high and radius of its base is 24 m. Find the cost of the canvas required to make the tent at the rate of Rs.70 per m²

Asked by mkmishra101 8th March 2016, 1:06 PM

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## The area of the curved surface area of cone of slant height 50 cm is 2200 cm². Find its height.

Asked by mkmishra101 3rd March 2016, 5:46 PM

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## A wooden toy is in the form of a cone Surmounted on a hemisphere. The diameter of the base of the cone is 6 cm and its height is 4 cm. Find the cost of painting the toy at the rate of Rs. 5 per 1000 cm2

Asked by dimplesharma0810 3rd March 2016, 1:04 PM

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## The vertical height of a cone is 6 cm and the radius of its base is 8 cm  .  Find the whole surface area of the cone  .

Asked by suprakash 17th January 2016, 12:12 PM

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## From a solid right circular cylinder with height 8cm and radius of base 6cm a right circular cone of the same height and base is removed . Find the total surface area of the remaining solid.

Asked by suprakash 17th January 2016, 11:59 AM

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## what is the simplest way to find the under root if decimal numbers?For example;root of 139.69 .

Asked by sangyaagarwal 14th December 2015, 5:36 PM

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## what formula would be used to find the area of cloth/canvas required to cover a right conical tent  some tents have a base in that case we would use t.s.a while in tents without base we would be using c.s.a but when the question does not tell whether the base has to covered or not then what to do

Asked by Shubhanker 20th February 2015, 9:59 PM

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## Assume , unless stated otherwise. What length of tarpaulin 3 m wide will be required to make conical tent of height 8 m and base radius 6 m? Assume that the extra length of material that will be required for stitching margins and wastage in cutting is approximately 20 cm. (Use  = 3.14). Solution Height (h) of conical tent = 8 m    Radius (r) of base of tent = 6 m    Slant height (l) of tent =          CSA of conical tent =  = (3.14  6  10)  = 188.4 Let length of tarpaulin sheet required be L. As 20 cm will be wasted so, effective length will be (L - 0.2 m) Breadth of tarpaulin = 3 m Area of sheet = CSA of tent     [(L - 0.2 m)  3] m = 188.4     L - 0.2 m = 62.8 m    L = 63 m        Thus, the length of the tarpaulin sheet will be 63 m.   elaborate last 2 points

Asked by Gajanan 7th December 2014, 1:59 PM

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## Curved surface area of a cone is 308 cm2 and its slant height is 14 cm. Find : (i) Radius of the base (ii) Total surface area of the cone.

Asked by Topperlearning User 28th November 2014, 10:30 AM

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### CBSE - IX - Mathematics - Surface Areas and Volumes

Asked by Topperlearning User 4th June 2014, 1:23 PM

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## A joker's cap is in the form of a right circular cone of base with radius 7 cm and height 24 cm. Find the area of the sheet required to make 10 such caps.

Asked by Topperlearning User 4th June 2014, 1:23 PM

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## The radius and height of a cone are in the ratio 4 : 3. The area of its base is 154 cm2. Find its curved surface area.

Asked by Topperlearning User 4th June 2014, 1:23 PM

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## Curved surface area of a cone of radius 4 cm is 20 cm2. Find total surface area of the same cone in terms of .

Asked by Topperlearning User 4th June 2014, 1:23 PM

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## The height and base diameter of a conical tent is 16 m and 24 m respectively. Find the cost of canvas required to make it at the rate of Rs. 210 per m2?

Asked by Topperlearning User 4th June 2014, 1:23 PM

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### CBSE - IX - Mathematics - Surface Areas and Volumes

Asked by Topperlearning User 4th June 2014, 1:23 PM

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### CBSE - IX - Mathematics - Surface Areas and Volumes

Asked by Topperlearning User 4th June 2014, 1:23 PM

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## A conical tent is 10 m high and the radius of its base is 24 m. Find(i) Slant height of the tent (ii) Cost of the canvas required to make the tent, if the cost of 1 m2 canvas is Rs.70.

Asked by Topperlearning User 4th June 2014, 1:23 PM

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## There are two cones. The C.S.A. of one is twice that of the other. The slant height of the latter is twice that of the former. Find the ratio of the radii.

Asked by Topperlearning User 4th June 2014, 1:23 PM

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## Find the volume, curved surface and total surface area of a cone with the given radius 3 m and height 4 m.ORThe curved surface area (CSA) of the cone is 814 sq. cm and the total surface area (TSA) of the cone is 1584 sq.cm. Find its volume.

Asked by Topperlearning User 4th June 2014, 1:23 PM

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## The circumference of the base of a 10 m high conical tent is 44 m. Calculate the length of canvas used in making the tent if the canvas is 2 m wide.

Asked by Topperlearning User 4th April 2014, 1:47 PM

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## From a right circular cylinder with a height 8cm and radius 6cm a right circular cone of the same height and base is removed . Find the total surface of the remaining solid.

Asked by Tejas Kulkarni 28th February 2014, 12:18 AM