Find the compound área of following shape

Atriangle has an area of 72 square inches. if the base of the triangle has a length of 18 inches, what is the height of the triangle? use the formula for the area of a triangle: area = (base)(height) type a numerical answer in the space provided. do not include the units or spaces in your answer.

True or false look at the picture pls : /

What is the perimeter of a rectangular building that is 80 feet wide and 140 feet deep?