Answer: choice C) (196/3)pi in^3
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Work Shown:
r = 7 is the radius
h = 4 is the height
V = volume of cone
V = (1/3)*pi*r^2*h
V = (1/3)*pi*7^2*4
V = (1/3)*pi*49*4
V = (1/3)*pi*196
V = (1/3)*196*pi
V = (196/3)*pi
The units are in cubic inches. Think of a box that is 1 inch by 1 inch by 1 inch. The volume of that box would be (1inch)*(1inch)*(1inch) = (1*1*1) (inch*inch*inch) = 1 inch^3 = 1 cubic inch.
We can write "cubic inch" as "in^3".
