the two sides of the parallelogram are in the ratio 3:4 .The length of the parallelogram is 4.2 cm, find its perimeter
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7x=2(4.2+b).
7x=(2×4.2)+(2×b)or (2×x)
7x=8.4+2x
7x-2x=8.4
5x=8.4
x=8.4÷5=1.68
perimeter=2×(4.2+x (or) 1.68
2×5.88=11.76. this is the answer and need to say thank you
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