Two sides of a parallelogram are in the ratio 1 : 3. If its perimeter is 32 cm, find the lengths of its sides.
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Length of the sides = 4cms and 12cms
perimeter = 2(l+b)
32cms = 2(l+b)
= 32 ÷ 2 = l+b
= 16 = l+b
= 16 = 1:3= 1x + 3x
= 16=4x
= x = 4cm
= 3x = 12cms
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