Question

The length of a rectangle is 5 less than 10 times its breadth. If the perimeter is 34cm, find the length and breadth. Please use a variable for this question.

Answer 1

Let breadth be X

Length= 10x-5

Perimeter= 2(l+b)

= 2[(10x-5)+x]

34= 2(11x-5)

34= 22x-10

34+10=22x

`x = (44)/(22) = 2 \: cm`

Length= 10×2-5= 15 cm

So Length= 15cm Breadth= 2cm