Q. 235.0( 6 Votes )

A. 1:2

B. 2:1

C. 1:4

D. 4:1

Answer :

Given: Bottom of a solid is hemispherical and conical above it, both have same radius

and same surface areas.

∴ CSA of hemisphere = CSA of Cone

⇒ 2 × π × r^{2} = πrl (where r is the radius and l is the slant height)

⇒ =

⇒ =

∴ r:l = 1:2

That is ratio of radius and the slant height of the given solid is 1:2.

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