Question

Laura plans to paint the 8-foot high rectangular walls of her room and before she buys paint she needs to know the area of the wall surface to be painted to walls are 10 ft wide in the other two walls are 15 ft wide the combined area of the one window and then one door in her room is 60 square feet what is the area in square feet of the wall surface Laura plans to paint

Answer 1

Answer:

340 square feet

Step-by-step explanation:

we know that

The area of the wall surface  is equal to the area of the four rectangular faces minus the combined area of the one window and one door in her room

so

$SA=2[(8)(10)]+2[(8)(15)]-60$

$SA=340\ ft^2$