# Length of rectangle 3 time its width if perimetre is 84m find length of rectangle

2
by jitesh1

2015-10-30T14:24:46+05:30

### This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
let the breath be x
length=3x
perimeter=2(l+b)
84=2(3x+x)
84=2(4x)
84=8x
x=10.5
length=3x
=3(10.5)
=31.5
l=31.5,b=10.5

PLS MARK IT AS THE BEST ANSWER........

2015-10-30T14:25:41+05:30

### This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
Let x & y be length & breadth ,

ATQ :-

x = 3y

perimeter = 2(x+y)

85 = 2(3y+y)

84 = 2×4y

84/8 = y

so , x = 3 × 84/8

x = 31.5 m