maria needs to purchase a carpet for her drawing room. maria measured the carpet as 8 ft. the actual measurement was 7.2 ft. what is maria's percentage of error?

144 square feet of carpet

We know that the area of square = (side)²

So , the area of the bedroom = (12)²

Simplify it

The area of the bedroom = 12 × 12 = 144 ft²

First, we need the volume of the room.  We get this by multiplying the length, width, and height.  This gives us 18,000 ft^3.  Now, we see how many BTUs were created.  We do this by multiplying 2,200 by 20.  This gives us 44,000.  Now, we divide 44,000 by 18,000 to get our answer, which is 2.44 BTUs/ft^3, or C.