a pair of adjacent sides of a rectangle are in the ratio 3 : 4 .if its diagonal is 20cm.find the lengths of the sides and hence the perimeter of the rectangle.
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sides of the rectangle are 12 cm and 16 cm.
The perimeter of the rectangle is --
= 2(l+b)
=2(16+12)
=2(28)
= 56 cm.
The perimeter of the rectangle is --
= 2(l+b)
=2(16+12)
=2(28)
= 56 cm.
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