Question

find the measurement of breadth of a rectangle if length is 20 cm and perimeter is 100 cm

Answer 1

Perimeter of rectangle = 2(l+b)
100 = 2(20+b)
100/2 = 20+b
50 = 20+b
50-20 = b
30 = b

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Answer 2

hey user here is your answer.........

Perimeter of rectangle=2(l+b)

Given- Perimeter=100cm

length=20cm

So put given values in formula------->

100=2(20+b)

100/2=20+b

50=20+b

b=50-20

b=30

Thanks