Question

a solid is hemispherical at the bottom and conical above . if the surface areas of the two parts are equal , then the ratio of its radius and the height of its conical part is _________

Answer 1

Let radius ( r ) = x 

l = 2x 

h = √ l² - r²

h = √ ( 2x )² - x²

h = √ 3x²

h = √3 x 

∴ Ratio of r and h = x : √3 x

r : h = 1 : √3

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Answer 2

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