Question

The length of a rectangle is twice its width if the perimeter is 30m what are the dimensions of the rectangle

Answer 1

Step-by-step explanation:

Let the width of the rectangle be x metre

So, the length of the rectangle = (2×x) metre =2x metre

Perimeter = 30 m

By condition,

2(L+B) = Perimeter

2(2x+x) = 30

4x+2x = 30

6x = 30

x = 30/6

x = 5

Length = (2×5) metres =10 metres

Width = 5 metres

Answer 2

Answer:

length is 10m

width is 5m

Step-by-step explanation:

let the width be x cm

given, perimeter=30m

length=2x (acc to the question)

therefore,

2(l+b) = perimeter

=>2(2x+x) = 30m

=> 2×3x = 30m

=> 6x=30m

=> x= 30m/6

=> x= 5m

therefore, width = 5m

length=2×5m = 10m