Question

I need help on this question

Answer 1

Your answer is the last option, 615.44 ft³.

We know this as the formula for the volume of a cone is [(π × r²) × ]/3, and substituting in our numbers, with 3.14 being π, we get:

[(3.14 × 7²) × 12]/3 = (153.86 × 12)/3 = 1846.32/3 = 615.44

I hope this helps!

Answer 2

Hey!

The formula for finding volume of a cone is: (π · r² · h) ÷ 3

$\pi = 3.14$

$r = 7 \\ r^{2} = 7 \times 7 = 49$

$h = 12$

First multiply

$3.14 \times 49 \times 12 = 1846.32$

Divide by 3

$1846.32 \div 3 = 615.44\ ft^{3}$

Your answer is the last choice

Good luck and hope this helps! :)