Question

What is the length of the rectangle whose breath is 10cm and perimeter 60 cm :

Answer 1

perimeter of rectangle=2(l+b)
60=2(l+10)
l+10=60÷2
l+10=30
l=30-10
l=20cm
Hence,the length of rectangle is 20cm.

Answer 2

perimeter=2(l+b) unit
let the length be x ,

60 cm = 2(x+10) cm
60=2x+20
60-20=2x
40=2x
x=20 ( length)

hope it will help u.☺