Question

the length of a rectangular field is thrice its breadth.if the perimeter of the field is 160m,find its length and breadth

Answer 1

hi dear.
according to condition,
let length be 3x and breadth be X. ( 1)
and p = 160 m
so
2 ( length + breadth ) = 160
( l + b ) = 80
3x + x = 80. ( from 1)
4x =80
x = 80/4
20
so breadth is 20 m
and length will be 3×20 = 60m
I hope you get the ans.
THANK YOU.

Answer 2

let breath = X and length =3 x
then
perimeter = 160 m
2 (3x+x)=160
4×2x=80
2x=20
x=10
length=30cm
breath=10cm