Question

find the length and breath of a rectangle given below if its perimeter is72m length-5xplus 4 breath is x-4

Answer 1

Heya !!


Length of rectangle = 5x + 4.



Breadth of rectangle = x - 4.


Perimeter of rectangle = 72


2 ( l + b ) = 72


2 ( 5x + 4 + x - 4 ) = 72




2 × 6x = 72



12x = 72


x = 6 m.



Length of rectangle = 5x + 4 = 5 × 6 + 4 = 34 cm.

And,


Breadth of rectangle = x - 4 = 6-4 = 2 m.

Answer 2

breadth= x - 4 and Length = 5x +4

perimeter of rectangle = 72 m
2 ( length + Breadth ) = 72
2 ( 5x + 4 + x - 4 ) = 72
2 × 6x = 72
12x = 72
x = 72/12
x = 6 m.
Length= 5x + 4 = 34 m and breadth = x-4 = 2 m