Question

A wall shaped like a trapezoid needs to be painted. the height of the wall is 16 feet and the bases are 20 feet and 24 feet. if one can of paint covers 20 square feet, how many whole cans of paint will the painter need to buy to paint the wall with one coat? the painter needs _____ cans of paint.

Answer 1

Area of Trapezoid = h(b1+b2/2)
 b1 and b2 are the lengths of each base and h is the height.

Area = 16(20+24/2)=352 Square Feet 

352/20=17.6 Cans of paint.

Hope this helps and is correct, I haven't done this kind of math in a while.