2 Answers

Malhaar Punjabi · Answer 1 · 2018-11-21T06:10:50+0000

The volume of a cone is
V = (1/3) π r² h
where r = radius of the base
h = the height.

The volume of the frustum is
(1/3)π(7.5²)(11+8) - (1/3)π(3.5²)(8)
=(1/3)π(7.5²)(19) - (1/3)π(3.5²)(8)

The 3rd choice is the correct answer.

Answer:

$(1)/( 3) \pi (7.5^(2))(19) - (1)/(3) \pi (3.5^(2))(8)$

A frustum is formed when a plane parallel to a cone’s base cuts off the upper portion-example-1

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