Circumference 17533

If we enlarge the side of the square by half, its circumference will be 24 cm larger than the original. What is the side of the square?

Correct answer:

a =  12 cm

Step-by-step explanation:

4(a+a/2) = 24 + 4a

4·(a+a/2) = 24 + 4·a

4a = 48

a = 48/4 = 12

a = 12

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