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
The identity property means that whatever you put in is whatever comes out. Notice that if we multiply 1 with any number, we get that number back. So multiplying by 1 is the identity property of multiplication.
