Question

the length and the breadth of rectangle are the ratio 2.1. if its perimeter is 90cm then find its length and breadth​

Answer 1

Step-by-step explanation:

length the = 20,breadth=1,perimeter=90, perimeter of rectangle=2(l+b), 90=2(2+1) ,90/2=3, 45=3x, x=45/3=15 , length=2x=2*15=30, breadth=1x=1*15=15

Answer 2

Answer:

the ratio Of length and breadth Is 2:1

let be x

given,

length =2x, breadth =1x

perimeter =90

solution, perimeter =2(length+breadth)

90 CM = 2(2x+1x)

90cm =2*3x

90 CM = 6x

x= 90/6

x= 15

now, length =2*15 =30

breadth =1*15=15