Question

The diagram shows the cross-section of a wall of a cinema. It is to be painted. Paint cost £6 for a tin which covers 25m^2. How much will it cost to paint?

Answer 1

53.04 pounds

Explanation:

We find the area of the shape:

10*13=130 is the rectangle

(10+6)*8/2=16*8/2=16*4=64 (area of the right trapezoid)

(10+8)*3/2=18*3/2=9*3=27 (area of the left)

130+27+64=221 is the total area

221/25*6=53.04 pounds