Question

A hemisphere of lead of radius 9cm is cast into a right circular cone of height 72 CM. find the radius of the base of the cone

Answer 1

volume of hemisphere = volume of cone
2/3 * pie * 9^3 = 1/3 *pie * r^2 * 72
r^2 = 9 * 9 * 9 * 2/72
r = square root(81/4)
r = 9/2 = 4.5 cm ANSWER.
thanks...  

Answer 2

hey
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Q•A hemisphere of lead of radius 9cm is cast into a right circular cone of height 72 CM. find the radius of the base of the cone


hemisphere is recasted into a cone

so volume of hemisphere= volume of cone

volume of hemisphere= 2/3πr^3

volume of cone=1/3πr^3

so after putting the values we will get the ans

for the ans refer to the attachment

hope helped
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