the adjacent sides of a rectangle differ by 30 cm if its perimeter is 180 cm then its sides
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Explanation:
1st side be x
2nd side = x+30
perimeter of ||gm = 2x + 2(x+30)
180=2x+2x+60
120=4x
30=x
1st side is 30cm
2nd side is 60cm
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