Beth wants to paint the four walls of her rectangular bedroom. Her room is 10 feet wide, 13 feet long, and 8feet high. She will not paint her rectangular door which is 3 feet wide and 7 feet high. what is the total area of the walls that Beth needs to paint?

Question

MidnightNightmare · Answer

The answer choices are 
 A. 347 square feet
B. 368 square feet
C. 578 square feet
D. 1019 square feet
E. 1040 square feet

Hoodmemes · Answer

Simple way to do this

Multiply "10 feet wide, 13 feet long, and 8feet high"

(10) times (13) times (8)

$$10\times13=130$$

Multiply (130) by (8)

$$130\times8=1040$$

Now do multiply "3 feet wide and 7 feet high."

(3) times (7)

$$3\times7=21$$

Subtract (21) from (1040)

$$1040-21=1019$$

So the correct answer option would be D.)1019 square feet

jhonyy9 · Answer

so you need to know that a bedroom has 4 walls so you need to calcule area of these walls and bc. there is a door so from this area you need subtract area of the door what will be 3*7 = 21 ft^2

2*(13*8) +2(10*8) = 208 + 160 = 368 -21 = 347 ft^2

jhonyy9 · Answer

$\color{#0cbb34}{\text{Originally Posted by}}$ @Hoodmemes
Simple way to do this