Given perimeter and side length a calculate area diagonals and side b. W 4 ft P 24 ft. A rectangular bedroom with one wall being 15 feet long and the other being 12 feet long is simply 12 x 15 180 square feet.
Just plug the area and length of the rectangle into the formula and solve for the width.
Given perimeter and side length a calculate area diagonals and side b. Area length width. Given perimeter and side length a calculate area diagonals and side b. Divide the perimeter by 2 2.