Question

The length and breadth of a rectangular field are in the ratio of 7:2. If perimeter of the field is 840 m, then
find its length and breadth.​

Answer 1

Answer:

answer is explained in detail at the above picture

Answer 2

Answer:

Length= 47.6m

Length= 47.6mBreath= 13.6m

Step-by-step explanation:

It is a rectangular field,

So perimeter will be 2(l+b)

Given perimeter= 840m

Length = 7x

Breath = 2x

Perimeter= 2(7x+2x)

840m = 18x^2

x^2 = 840/18 = 46approx

x = under root 46

x = 6.8

Length = 7x = 7*6.8= 47.6m

Breath = 2x = 2*6.8= 13.6m