Find the volume of a cone with a base diameter

Question

Find the volume of a cone with a base diameter of 6in

 and a height of 12in

.

Use the value 3.14

 for π

, and do not do any rounding.

Be sure to include the correct unit in your answer.

6in

12in

Answer 1

v= hpir^2/3= 12pi(6/2)^2/3

= 4pi(9)

=about 36(3.14) in^3

= 111.744 cubic inches

Answer 2

For a cone:

Volume = (1/3)·π·r²·h

where π = 3.14, r is the radius of the base, and h is the height of the cone. The radius (r) is one-half of the diameter. Just plug the numbers into the formula. The units are cubic inches (in³).