We are told that rectangular pyramid has a base measuring 12 inches by 5 inches and a height of 13 inches. With this in mind, we want to find its volume. To do it, we can use the following formula.
V=1/3BhIn this formula, B is the area of the base, and h is the height of the pyramid. Let's first calculate the area of the base. The base of the rectangular pyramid is a rectangle. We are told that its dimensions are 12 inches by 5 inches. The area of the rectangle equals the product of the lengths of the sides.
B=ab ⇒ B&=( 12)( 5)
&= 60in^2
Now, we can substitute the area of the base and the height of the pyramid into the formula and calculate V.