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If the perimeter of a rectangle and a sq...

If the perimeter of a rectangle and a square each is equal to 80 cm and the difference of their areas is 100 sq. cm, the sides of the rectangle are:

A

25 cm, 15 cm

B

28 cm, 12 cm

C

30 cm, 10 cm

D

35 cm, 15 cm

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The correct Answer is:
C
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