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Surface Area Of A Cylinder Free Doubts and Solutions

CBSE - IX - Mathematics - Surface Areas and Volumes

The curved surface area of a solid cylinder is 880 cm2 and its height is 20 cm. Find the area of the base of the cylinder.

Asked by Topperlearning User 12th October 2017, 9:06 AM
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CBSE - IX - Mathematics - Surface Areas and Volumes

What length of tarpaulin 3 m wide will be required to make a cylindrical tent open at both the ends, of height 3 m and base radius 7 m?

Asked by Topperlearning User 12th October 2017, 9:04 AM
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CBSE - IX - Mathematics - Surface Areas and Volumes

The curved surface area of a solid cylinder is 440 cm2 and its height is 10 cm. Find the circumference of the base of the cylinder.

Asked by Topperlearning User 12th October 2017, 8:58 AM
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CBSE - IX - Mathematics - Surface Areas and Volumes

Find the cost of plastering the inner surface of a circular well at the rate of Rs 30 per m2, if the inner diameter of a circular well is 2.8 m and its depth is 14 m.

Asked by Topperlearning User 12th October 2017, 8:54 AM
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CBSE - IX - Mathematics - Surface Areas and Volumes

A cylindrical pillar is 49 cm in diameter and 3.5 m in height. Find the cost of painting the curved surface of the pillar at the rate of Rs 100 per m2

Asked by Topperlearning User 12th October 2017, 8:50 AM
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CBSE - IX - Mathematics - Surface Areas and Volumes

Find the curved surface area of a 44 m long metal pipe if diameter of its cross section is 4.2 cm.

Asked by Topperlearning User 12th October 2017, 8:45 AM
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CBSE - IX - Mathematics - Surface Areas and Volumes

A water storage tank has a cylindrical shape. If it is 2.1 m high and has a diameter 1.4 m, find the cost of painting its base and curved surface area at the rate of Rs 5 per m2.

Asked by Topperlearning User 12th October 2017, 8:41 AM
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CBSE - IX - Mathematics - Surface Areas and Volumes

The circumference of the base of a right circular cylinder is 66 cm. If the height of the cylinder is 2 m, find the lateral surface area (curved surface area) of the cylinder.

Asked by Topperlearning User 12th October 2017, 8:15 AM
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CBSE - IX - Mathematics - Surface Areas and Volumes

Find the lateral surface area (curved surface area) of a hollow cylinder open at the ends of length is 14 cm, the external diameter is 10 cm and the thickness is 2 cm.

Asked by Topperlearning User 12th October 2017, 8:11 AM
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CBSE - IX - Mathematics - Surface Areas and Volumes

A hollow cylindrical tube, open at both ends is made of iron 1 cm thick. If the external diameter is 14 cm and the length of tube is 70 cm, Find the cost of painting its inner surface at the rate of Rs. 4 per cm2.

Asked by Topperlearning User 12th October 2017, 8:09 AM
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CBSE - IX - Mathematics - Surface Areas and Volumes

If 1 m2 of sheet costs Rs. 400. Find the cost of sheet required to make a closed cylindrical tank of height 1.4 m and base diameter 210 cm.

Asked by Topperlearning User 12th October 2017, 8:05 AM
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CBSE - IX - Mathematics - Surface Areas and Volumes

Find the area levelled by a roller in 100 revolutions if radius and length of the roller is 35 cm and 1 m respectively.

Asked by Topperlearning User 12th October 2017, 8:03 AM
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CBSE - IX - Mathematics - Surface Areas and Volumes

The inner radius of a circular well is 2.1 m and its depth is 21 m. Find the cost of plastering the inner surface of a circular well at the rate of Rs. 40 per m2

Asked by Topperlearning User 12th October 2017, 8:02 AM
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CBSE - IX - Mathematics - Surface Areas and Volumes

Find the lateral surface area of a hollow cylinder open at the ends, if its length is 10 cm, the external diameter is 8 cm and the thickness is 1 cm.

Asked by Topperlearning User 12th October 2017, 7:59 AM
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CBSE - IX - Mathematics - Surface Areas and Volumes

The diameter of a roller 1 m long is 56 cm. If it takes 200 revolutions to level a playground, find the cost of levelling the playground at the rate of 50 paisa per m2.

Asked by Topperlearning User 12th October 2017, 7:56 AM
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CBSE - IX - Mathematics - Surface Areas and Volumes

The curved surface area of a cylinder of height h is 6πrh. Find the area of its base.

Asked by tkguha 14th March 2016, 7:59 PM
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CBSE - IX - Mathematics - Surface Areas and Volumes

A cylinder of base diameter 8 cm and height 7 cm is dipped vertically one third in a bucket full of paint. How much area get painted.

Asked by mkmishra101 8th March 2016, 1:09 PM
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CBSE - IX - Mathematics - Surface Areas and Volumes

A cylindrical pillar is 50 m in diameter and 3.5 m in height. Find the cost of painting the curved surface area of the pillar at the rate of Rs.12.5 per m².

Asked by mkmishra101 2nd March 2016, 7:34 PM
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CBSE - IX - Mathematics - Surface Areas and Volumes

The diameter of a garden roller is 1.4 m and it is 2 m long. How much area will it level in 5 revolutions? 

Asked by mkmishra101 2nd March 2016, 7:13 PM
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CBSE - IX - Mathematics - Surface Areas and Volumes

the T.S.A  of a hollow cylinder open from both sides is 4620 cm2  and area of the base ring is 115.5 cm2.Find the thickness of the cylinder, if its height is 19 cm ?

Asked by nisha_vini29 8th February 2016, 11:59 AM
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CBSE - IX - Mathematics - Surface Areas and Volumes

The ratio between curved surface area and total surface area of a right circular cylinder is 2 : 3. Find ratio between height and radius of cylinder.

Asked by Topperlearning User 4th August 2014, 3:38 PM
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CBSE - IX - Mathematics - Surface Areas and Volumes

The difference between the outer lateral surface area and inner lateral surface area of a cylindrical metallic pipe 28 cm long is 176 cm2. Find the outer and inner radii of the pipe, if the pipe is made of 352 cm3 of metal.

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - IX - Mathematics - Surface Areas and Volumes

An open cylindrical vessel has base diameter 14 cm and height 21 cm. Find the cost of tin plating its inner surface area at the rate of Rs 3 per 10 cm2. .

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - IX - Mathematics - Surface Areas and Volumes

An iron pipe 20 cm long has exterior diameter 25 cm. If the thickness of the pipe is 1 cm, find the whole surface area of the pipe.

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - IX - Mathematics - Surface Areas and Volumes

Find the curved surface area of a cylindrical pillar which is 1.2 m high and has the diameter of the base as 28 cm. [Use ]

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - IX - Mathematics - Surface Areas and Volumes

The total surface area of a solid right circular cylinder is 231 cm2. If curved surface area is two-third of the total surface area, find the radius of the base.

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - IX - Mathematics - Surface Areas and Volumes

The inner diameter of a circular well is 3.5 m. It is 10 m deep. Find: (i) Its inner curved surface area (ii) The cost of plastering this curved surface at rate of Rs. 40 per m2

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - IX - Mathematics - Surface Areas and Volumes

The radii of two right circular cylinders are in the ratio 2 : 3 and their heights are in the ratio 5 : 4. Find the ratio of their curved surface areas.

Asked by Topperlearning User 21st March 2014, 3:38 PM
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CBSE - IX - Mathematics - Surface Areas and Volumes

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

Asked by Topperlearning User 25th February 2014, 12:46 PM
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CBSE - IX - Mathematics - Surface Areas and Volumes

Asked by Topperlearning User 25th February 2014, 12:35 PM
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CBSE - IX - Mathematics - Surface Areas and Volumes

Savitri had to make a model of a cylindrical kaleidoscope for her science project. She wanted to use chart paper to make the curved surface of the kaleidoscope. What would be the area of chart paper required by her, if she wanted to make a kaleidoscope of length 25 cm with a 3.5 cm radius?

Asked by Topperlearning User 25th February 2014, 11:50 AM
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