First solve the area of the arrow, the arrow consist of a rectangle that has a dimensions of 10 ft x 18 ft. and the triangle has a base of 20 ft and the height is 6 ft.
A = xy + 0.5bh where x and y are the dimensions of the rectangle b is the base of the triangle h is the height of the traingle
A = (10)(18) + 0.5(20)(6) A = 240 sq ft
number can of paint = 240 sq ft ( 1 can / 100 sq ft) =2.4 can of paint, since you cant purchase a fraction of the can then the he need to buy 3 cans of paint
