Question

4) A can of paint that covers 20 m2 costs $24.60. The walls of a room 13 ft x 18 ft are 8 ft high. What is the cost of paint for the walls?

Answer 1

Here we need to calculate the total surface area of the wall.

Total surface area = 2 time (18 times 8) + 2 times (13 times 8) ft^2 = 496 ft^2 ft^2 = 0.0929 m^2 Hence Surface area = 496 times 0.0929 m^2 = 46.0784 m^2 cost at point = 24.60/20 m^2 times 46.0784 m^2 = 56.67 $