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I desperately hope it would be an F, but due to grade inflation that's probably a C by now.
You got 75% correct.Reason:5 is 1/4 of 20, therefore meaning that you got 3/4 correct. And of course 3/4 = .75, or 75%
subtract the biggest # from the lowest. If you the numbers 10, 18, 2, and 20, to find the range you would do this: 20-2=18. So the range would be 18.
Assuming the room is 20 ft by 18 ft (the question does not say so), the area would be 20*18 = 360 square feet
well, if you went to school you would know the answer, i am in grade 6 and i kjnow the answer: A=LxW A=20x20 A=400ft sqrd. if you don't know why i got 400ft sqrd, you simply multiply 20 by 20 and your area is 400 ft sqrd. have a nice day!