Question

side of a rectangle are in the ratio of 2 ratio 7 if its perimeter is 90 cm find its length and breadth

Answer 1

let length be 2x and bredth be 7x
atq
2x+2x+7x+7x=90
18x=90
x=90÷18
x=5
length =2*5=10 cm
breadth =7*5=35com

Answer 2

hiii!!!

here's ur answer frnd...

let the breadth and length of the rectangle be 2x and 7x respectively.

perimeter of the rectangle=90cm

2(l+b)=90cm

2(7x+2x)=90cm

2×9x=90cm

9x=90/2

9x=45

x=45/9

x=5

therefore breadth of the rectangle=2x

=2×5

=10cm

length of the rectangle=7x

=7×5

=35cm

verification:-

perimeter=2(l+b)

=2(35+10)

=2×45

=90cm

hence verified

hope this helps u...

(^^)