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The dome of a building is in the form of...

The dome of a building is in the form of a hemisphere. Its radius is 63 dm. Find the cost of tin-plating it on the inside at the rate of Rs. 2 per `100cm^2`.

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MBD-Surface Areas and Volumes-Exercise
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  2. The radius of a spherical balloon increases from 6 cm to 12 cm. Compar...

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  3. The dome of a building is in the form of a hemisphere. Its radius is 6...

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  4. Assuming the earth to be a sphere of radius 6370 km, how many square k...

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  9. Find the cost of digging a cuboidal pit 8 m long, 6 m broad and 3 m de...

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  11. A village, having a population of 4000, requires 150 litres of water p...

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  13. Find the minimum number of bricks each measuring 22.5 cm xx 11.5 cm xx...

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  14. A solid cube of side 12 cm is cut into eight cubes of equal volume. Wh...

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  15. A river 3 m deep and 40 m wide is flowing at the rate of 2 km per hour...

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  16. Find the length of a wooden plank of width 2.5 m, thickness 0.025m and...

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  17. The rainfall on a certain day was 6 cm. How many litres of water fell ...

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  19. The dimensions of a metal block are 4.5 m by 1.5 m by 27 m. It is melt...

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  20. The length, breadth and thickness of a metallic cuboid are 28 cm, 14 c...

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