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The diameter of a sphere is decreased by...

The diameter of a sphere is decreased by 25%. By what per cent does its curved surface area decrease?

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RD SHARMA ENGLISH-SURFACE AREA AND VOLUME OF A SPHERE -All Questions
  1. A toy is in the shape of a right circular cylinder with a hemispher...

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  2. A wooden toy is in the form of a cone surmounted on a hemisphere. T...

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  3. The diameter of a sphere is decreased by 25%. By what per cent does...

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  4. Find the surface area of a sphere of radius: 10.5 cm         (ii...

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  5. Find the surface area of a sphere of diameter: (i) 14 cm (ii) 21 cm (i...

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  6. Find the total surface area of a hemisphere of radius 10 cm

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  7. The surface area of a sphere is 5544\ c m^2, find its diameter.

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  8. A hemispherical bowl made of brass has inner diameter 10.5cm. Find ...

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  9. The dome of a building is in the form of a hemisphere. Its radius i...

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  10. Assuming the earth to be a sphere of radius 6370 km, how many squar...

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  11. A cylinder of same height and radius is placed on the top of a hemi...

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  12. A wooden toy is in the form of a cone surmounted on a hemisphere. T...

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  13. A storage tank consists of a circular cylinder with a hemisphere ad...

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  14. The diameter of the moon is approximately one fourth of the diamete...

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  15. A hemispherical dome of a building needs to be painted (see Fig. 13.2...

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  16. The front compound wall of a house is decorated by wooden spheres o...

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  17. Find the volume of a sphere of radius 7cm.

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  18. Find the volume of hemisphere of radius 3.5cm.

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  19. A hemispherical bowl is made of steel 0.5 cm thick. The inside radi...

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  20. A hemispherical bowl has inner diameter 11.2cm. Find the volume of ...

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