In World War I, colonial soldiers often dug trenches along the front lines. Imagine a trench with a cross-section that is shaped like a semi-circle. The trench is 10 feet long and 6.5 feet deep at its deepest point. What is the volume of the trench? Round to the nearest whole number. Use the formula for the volume of a cylinder to help you decide: Vcyl = π r2 h where Vcyl is the volume of a right cylinder, πis about 3.14, r is the radius of the base, and h is the height of the cylinder

Question

In World War I, colonial soldiers often dug trenches along the front lines. Imagine a trench with a cross-section that is shaped like a semi-circle. The trench is 10 feet long and 6.5 feet deep at its deepest point. What is the volume of the trench? Round to the nearest whole number. Use the formula for the volume of a cylinder to help you decide: Vcyl = π r2  h where Vcyl is the volume of a right cylinder, πis about 3.14, r is the radius of the base, and h is the height of the cylinder

anonymous · Answer

pi =3.14
h = length = 10
r =6.5
Volume of trench = 1/2 of volume of cylinder 
0.5*pi*r^2*h