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Brad and Colleen are on the decorating committee for the prom. They need to cover the walls with fabric. If the room is 12 feet by 12 feet with a height of 9 feet, how much area will they cover if they cover the four walls?

A) 432 ft squared

B) 576 ft squared

C) 648 ft squared

D) 720 ft squared

pwolfey  Nov 2, 2017

Best Answer 

 #1
avatar+16 
+2

Ah.  Trick question?

You gave me 3 numbers to work with, but the answers say "squared."  I guess I am finding the area of the walls in total.

 

The area formula is \(bh\).  In this problem, \(b=12 \) and \(h=9\).  Each wall is \(108 ft^2\).

 

The room is a square (12 by 12), so all the walls' areas are the same.  So, \(108 ft \cdot\ 4 ft= \boxed{432 ft ^2}\).  The answer choice is \(\boxed{A}\).

Vivien  Nov 4, 2017
 #1
avatar+16 
+2
Best Answer

Ah.  Trick question?

You gave me 3 numbers to work with, but the answers say "squared."  I guess I am finding the area of the walls in total.

 

The area formula is \(bh\).  In this problem, \(b=12 \) and \(h=9\).  Each wall is \(108 ft^2\).

 

The room is a square (12 by 12), so all the walls' areas are the same.  So, \(108 ft \cdot\ 4 ft= \boxed{432 ft ^2}\).  The answer choice is \(\boxed{A}\).

Vivien  Nov 4, 2017

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