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The radius of a sphere increases by 25% ...

The radius of a sphere increases by 25% . Find the percentage increase in its surface area.

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The correct Answer is:
`56.25%`
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PREMIERS PUBLISHERS-MENSURATION-OTHER IMPORTANT OBJECTIVE TYPE QUESTIONS
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  2. Match the following:

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  3. The surface area of a sphere is 154 cm^(2). Its radius is:

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  4. The surface area of two spheres are in the ratio 9:16. Find the ratio ...

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  6. A cylindrical drum has a height of 10 cm and base diameter 14 cm, find...

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  9. The radius of a conical tent is 7 m and the height is 24 m. What is th...

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  10. If the T.S.A of a cone of radius 7 cn is 440 cm^(2) then slant height ...

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  11. The volume of a cylinder whose height is 5m and whose base area is 51....

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  12. The ratio of the volume of two cones is 2:9, find the ratio of their r...

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  13. The height of a right circular cone whose radius is 10 cm and slant he...

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  14. if the radius of the base of a right circular cylinder is doubled keep...

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  15. If the radius of the base of a cone is doubled and the height is tripl...

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  16. A hemispherical solid of radius r1 units is melted and made into 32 id...

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