Question

The length of a rectangle is double its breadth. If its perimeter is 120 m find the length
and breadth of the rectangle.

Answer 1

Answer:

Let breadth of a rectangle = x

Then length = 2x

Perimeter = 2(x+2x)=2×3x=6x

6x=120

⟹x=20

Length =2x=20×2=40m

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

Answer:

Breadth = 20 cm

Length = 40 cm

he area of rectangle is 800 sq.cm

Step-by-step explanation:

Let the breadth of rectangle be x

We are given that The length of a rectangle is twice its breadth.

So, length = 2x

Perimeter of rectangle =

2(Length+Breadth)=2(2x+x)=6x2(Length+Breadth)=2(2x+x)=6x

We are given that The perimeter of the rectangle is 120 cm.

So, 6x=1206x=120

x=20x=20

So, Breadth = 20 cm

Length =2x = 2*20 = 40 cm

Area of rectangle = L × B

40×20

800 cm

Hence The area of rectangle is 800 sq.cm