Question

Find the length of a rectangle whose perimeter is 100m and breadth is

20m.​

Answer 1

Answer:

Perimetre=2(l+b)

P=100m

b=20m

2(l+b)=100

l+b=50

l+20=50

l=50-20

=30m

ie Length l=30m

Answer 2

Answer:

length =30m

Step-by-step explanation:

perimeter=2(length + breadth)

100=2(length + 20)

100=(2*length + 2*20)

100=(2L +40)

100-40=2L

2L=60

L=60/2

L=30