Question

Janet needs to paint the walls of a room shaped like a

rectangular prism. The room
has a length of 10 ft., a width of 15 ft, and a height of 8 ft. How much paint does she need to cover the

Answer 1

To solve this problem, we will use the formula of rectangular prism surface area.

The formula is:

A=2(wl+hl+hw)

A is the area, w is the width, l is the length, and h is the height.

So we will put in all the numbers.

A=2((15)(10)+(8)(10)+(8)(15))

Multiple all the numbers inside:

A=2(150+80+120)

Add all the numbers inside:

A=2(350)

Multiply:

A=700ft^2

Hope this helped!