Question

A room is 8.5 m long,6.5 m broad and 3.4 m high. it has two doors, each measuring (2 m 1m).find the cost of painting its four walls at £160 per m.

Answer 1

Find the surface area of the 4 walls by doing
2(8.5x3.4) + 2(6.5x3.4)
Then subtract the area of the 2 doors , which is 4
So the total painted surface will come out to be 98m
Multiply 98 by the cost, £160 to get a total cost of £15680 to paint the room