Question

The area of a rectangle with length and breadth in the ratio of 8:5, respectively, is 320 cm². If the perimeter of the rectangle is the same as the perimeter of a square, then find the length of each side of the square.

A 12.2√5 cm
B 8.2√8 cm
C 10.5√5 cm
D 6.5√8 cm
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