Question

Find the volume of a right circular cone that has a height of 12.4 in and a base with a diameter of 15.6 in. Round your answer to the nearest tenth of a cubic inch.

Answer 1

r = d/2
r = 15.6/2
r = 7.8 in.
thus the radius of the right circular cone is 7.8
v = 1/3(3.14)(7.8)^2(12.4)
v= 1/3(3.14)(60.84)(12.4)
v= 2368.866/3
v = 789.622
thus the volume of the right come is 789.622 cubic inches