anandjose
Oct 29, 2013, 11:00 PM
A solid substance of cylindrical shape, 43 inches of circumference and 1 feet length. Is how much cubic feet?
Celine91
Oct 30, 2013, 09:32 AM
43 inches of circumference and 1 feet length.
circumference: 2*pi*r = 43 inches ---> r = 6.847 inches
area = pi * r^2 = 147.275 (inches)^2
volume = area * height = 147.275 * 12 = 1767.29 (inches)^3
[1 feet = 12 inches]
answer has to be in cubic feet, (1 feet)^3 = 1728 (inches)^3
==> cylinder in cubic feet = 1767.29/1728 = 1.02273
Answer = 1.02273 cubic feet.