Question

the length of a rectangle is 7 more then it's breadth if its perimeter is 50 meter find the lengtand breadth of tha rectangle

Answer 1

Let the breadth=b
So length =b+7


Perimeter=50m
Perimeter=2(l+b)
50m=2(b+7+b)
50m=2b+14+2b
50m=4b+14
=50-14=4b
=36=4b
=36/4=b


Hence b=9cm
and l=9cm+7cm=16cm

Answer 2

Perimeter = 50m
Length is 7 more then it's breadth
Let breath = x
Length = x + 7, as it's is 7 more
Then Perimeter = length * breath, which is
50=(7+x)+x
50=7+2x
50-7=2x
43=2x
43/2=x
X=21.5
So the breadth is 21.5m
Length is 21.5 + 7 = 28.5m