Question

A wall is 12 feet long and 8 feet tall. There is a square window 4 feet long in the wall. What is the area of the wall surface?

Answer 1

How to find the surface area of Rectangular Prisms:

Find the area of two sides (Length*Height)*2 sidesFind the area of adjacent sides (Width*Height)*2 sidesFind the area of ends (Length*Width)*2 endsAdd the three areas together to find the surface area.   



I hope this helps :)

Answer 2

Answer:

80ft

Step-by-step explanation:

A=LxW

L=12

W=8

12x8=96ft. 

Area = 96ft (without the window.)

Now we need to subtract the window from the area from the wall. What is the area of the window?

A=LxW

L=4

W=4

4x4=16

A=16ft (Area of just the window)

Let's subtract the window form the wall to get the total area!

96-16=80ft

A=80ft

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