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Square A has an area of 25 square centimeters. Square B has a perimeter of 16 centimeters. If square B is placed within square A, and a random point is chosen within square A, what is the probability the point is not with in square B?
A. 9/25
B. 1/5
C. 16/25
D. 3/5
E. 6/25
==> the area of square A is 25, and the perimeter of square B is 16, thus the area of square A is (16/4)^2 = 16. the question asks the probability that the point will be in square A but not in square B, thus the answer is (25-16)/25=9/25.
The answer is A
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