The large decorative storage unit needs to be updates, painted, and re-
shingled. The base of the storage shed is a rectangle measuring 15 feet by 20

feed, and the shed’s height is 10 feet. The roof’s front face (the triangular part
at the top of two opposite walls) is an isosceles triangle with a height of 4 feet.
Find the surface area to be painted (all the wall space, no roof or floor).