Question

the width and length of a rectangle are 2 consecutive numbers. If the perimeter is 30 cm find the dimensions of the rectangle

Answer 1

Answer:

Let the length be x

Breadth be x+1

we know

perimeter of a rectangle=2(l+b)

2(x+x+1)=30

2(2x+1)=30

4x+2=30

4x=30-2

4x=28

x=28/4

x=7

therefore

length=x=7

breadth=x+1=7+1=8

Let's check whether it's correct or not

2(7+8)=30

2×15=30

30=30

L.H.S=R.HS

Hence verified

hope it helps