What is the exact volume of the cone 4in (height) and 7 (radius).
ANSWER OPTIONS:
A.) 28π in³
B.) 563π in³
C.) 1963π in³
D.) 196π in³

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Respuesta :

The formula to fine the volume of a cone is v = π*r^2*h/3

Plug in 4 for height, or h, and 7 for radius, or r:

v = 
π*7^2*4/3

First, multiply the exponents. 7 * 7 is 49. Now multiply 49 by 
π, or 3.14 to get 153.86.

Divide the height (4) by 3 to get 1.33 (or 1 1/3 in fraction form).

Now multiply 153.86 by 1.33 to get about 205.25. The correct answer should be 205π in^3 but I don't see that on here?

I don't know, this is kinda confusing. If anyone else could share how they got their answer, that'd be great...I got 205π in^3 from following the formula, so I don't know what happened.