Find the volume of a pyramid with a square base, where the perimeter of the base is 15.2m and a height of the pyramid is 21.3m round your answer to the nearest 10th of a cubic meter

In terms of x, find an expression that represents the area of the shaded region. the outer square has side lengths of (x+5) and the inner square has side lengths of (x-2), as shown. area: a1 x + a2 square units submit