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Home /Doubts and Solutions/CBSE/Class 9/Mathematics/Surface Areas And Volumes

Surface Areas And Volumes Free Doubts and Solutions

CBSE - IX - Mathematics - Surface Areas and Volumes

How many metres of cloth 1m 10cm wide will be required to make a conical circus tent whose height is 12m and radius of the base is 16m ? Find also the cost of the cloth requiredat Rs 28/metre.

Asked by suprakash 17th January 2016, 11:49 AM
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CBSE - IX - Mathematics - Surface Areas and Volumes

The total surface area of a solid cylinder is 231 cm square and its. Curved surface area is 2/3 of the total surface area find the volume of the cylinder

Asked by digantverma08 8th January 2016, 12:18 AM
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CBSE - IX - Mathematics - Surface Areas and Volumes

The curved surface area of a cylinder is 1210cm square and its diameter is 20 cm . Find its height and volume

Asked by digantverma08 7th January 2016, 11:13 PM
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CBSE - IX - Mathematics - Surface Areas and Volumes

A cone and hemisphere have equal bases and equal volumes then find the ratio of their height

Asked by surajsugitha 12th November 2015, 7:23 PM
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CBSE - IX - Mathematics - Surface Areas and Volumes

Two spheres of same metal weight 1kg and 7kg with the smaller sphere having a radius of 3 cm are recast into a big sphere. Find the radius of the recasted sphere.

Asked by Jerlin George 18th March 2015, 12:27 AM
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CBSE - IX - Mathematics - Surface Areas and Volumes

How many litres of water flow out of a pipe having an area of cross section of 8cm2  in one minute, if the speed of water in the pipe is 40cm/sec

Asked by geethasree.vani5 15th March 2015, 9:47 PM
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CBSE - IX - Mathematics - Surface Areas and Volumes

Respected sir/madam,
Can you please refer to Question No. 18 of Ex. 18.1 of the book RD Sharma. How do we find out the front surface area to be polished of the bookshelf?

Asked by Varsneya Srinivas 9th March 2015, 3:52 PM
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CBSE - IX - Mathematics - Surface Areas and Volumes

A solid consists of a cylindrical section of length 6.5 cm and surmounted by a cone at one end, a hemisphere at the other end. Given that common radius is 3.5 cm and total height of the solid is 12.8 cm, find the volume of solid.

Asked by bis0584 1st February 2015, 1:12 PM
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CBSE - IX - Mathematics - Surface Areas and Volumes

How many Lead shots each of radius 1 cm can me made from a sphere of radius of 8cm?

Asked by avantikadandapani 5th December 2014, 2:25 PM
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CBSE - IX - Mathematics - Surface Areas and Volumes

Ramu is a gardener who pulls water from an undeground tank of diameter 7 m to irrigate his garden.If he pulls up
200 buckets of total water,then water level falls down 10cm in the tank.What is the capacity of the bucket in litre?

Asked by araima2001 17th November 2014, 6:27 PM
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