The exterior wall (the gabled end of the house shown) remains to be painted.

Question

The exterior wall (the gabled end of the house shown) remains to be painted.

18 ft

10 ft

34 ft

The end of a house consists of a triangle atop a rectangle; the horizontal base of the triangle is the top side of the rectangle. Three lengths are given.

1. One of the longer, horizontal sides of the rectangle is 34 ft.
2. One of the shorter, vertical sides of the rectangle is 10 ft.
3. The vertical distance from the bottom side of the rectangle to the vertex of the triangle opposite the base is 18 ft.

(a) What is the area in square feet of the outside wall?

(b)If each gallon of paint covers approximately 105 ft² and you can only purchase whole gallons of paint, how many gallons of paint must be purchased? (Round your answer up to the nearest whole number.)

 gal

(c) If each gallon of paint is on sale for $26.50 and you can only purchase whole gallons of paint, what is the total cost in dollars of the paint?

Answer 1

Correctly label the lengths of ALL sides!

Calculate area of rectangle and triangle

Add the two areas

Divide the total area by 105. This is the number of gallons

Multiply number of whole gallons by $26.50.