A particular right pyramid has a square base, and each edge of the pyramid is four inches long. What is the volume of the pyramid in cubic inches? Express your answer as a decimal to the nearest hundredth.
Surface area of one face =1/2*4^2*sin(45) =5.657 in^2
Height =5.657 / 2 =2.828 inches.
Volume =1/3 * 4^2 * 2.828 = 15.08 in^3.