Question

The perimeter of a rectangle is 120 cm.The ratio of its length and width 2:1 Find the area of the rectangle​

Answer 1

Answer:

length is 40cm and width is 20cm.

Step-by-step explanation:

let ratio of its length and width be 2x:x.

perimeter of rectangle =2(l+b)

120= 2(2x+x)

120= 2(3x)

120= 6x

x=20

So, length is 40cm and width is 20cm.

Answer 2

Answer:

Answer is 80 cm^2

Step-by-step explanation:

The perimeter is 120cm.

The ratio of length-breadth is 2:1.

Let the length be 2x.

Let the breadth be x.

perimeter=2(l+b)

.:2(2x+x)=120

2(3x)=120

6x=120

x=120/6

x=20

Length is 2x=2*20=40cm

Breadth is x=20cm

.: Area is l*b=40*20

The answer is 80 cm^2