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Mathematics 22 Online
OpenStudy (anonymous):

@horsegirl27 Mike’s room is 12 feet by 16 feet. He has a 10-foot by 12-foot rug on the floor. How much of the flooring is not covered by the rug? A. 72 ft2 B. 44 ft2 C. 24 ft2 D. 12 ft2

OpenStudy (anonymous):

Find the area of Mikes room minus the area of Mikes rug.

OpenStudy (horsegirl27):

So, do you know how to find area?

OpenStudy (anonymous):

yea

OpenStudy (horsegirl27):

Ok, so find the are of the room, 12*16

OpenStudy (anonymous):

192

OpenStudy (horsegirl27):

Good, next do 12*10 to find the area of the rug.

OpenStudy (anonymous):

120

OpenStudy (horsegirl27):

Alrighty, last step is to subtract the area of each, so 192-120. What will you get?

OpenStudy (anonymous):

so now subtract 192 from 120

OpenStudy (anonymous):

-72

OpenStudy (horsegirl27):

The opposite @mathscience4ever, you want to subtract 120 from 192

OpenStudy (horsegirl27):

192-120=?

OpenStudy (anonymous):

72

OpenStudy (anonymous):

correct

OpenStudy (horsegirl27):

Good. And it's feet squared, so A. Good job!

OpenStudy (anonymous):

thank

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