Circumference 7687

If we increase the length of the side of the square by one-third, the circumference of the square will increase by 18 cm. Calculate the length of the side of the square.

Correct answer:

a =  13.5 cm

Step-by-step explanation:


4(a+a/3) = 4a + 18

4·(a+a/3) = 4·a + 18

4a = 54


a = 54/4 = 13.5

a = 27/2 = 13.5

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