Answer:
breadth = 25m
length= 35m
Explanation:
perimeter is distance all round a figure
in a rectangle we have two pairs of opposite but equal lines
breadth = 2x( because of the two breadths in a rectangle) - 20
length = 2x( because of the two lengths in a rectangle)
perimeter = 2x + 2x - 20
120 = 4x - 20
120 + 20 = 4x
140 = 4x
35 = x
to get the dimensions, we have to divide by 2 as we took both parts of each dimension
breadth = 2x - 20
2
=2(35) - 20
2
= 70 - 20
2
= 50m
2
= 25m
length = 2x
2
= 2(35)
2
= 70m
2
= 35m