Question

The length of a rectangle is twice its width. If the perimeter of the rectangle is 60m, how do you find its area?

Answer 1

`200m^2`

Explanation:

Let `x` be the width of the rectangle
Then `2x` is the length of the rectangle

The perimeter of the rectangle is equal to `2times"length"+2times"width"`

ie `2(2x)+2(x)=60` (Perimeter of rectangle is `60`)

`4x+2x=60`
`6x=60`
`x=10`

That means that the width of the rectangle is `10` and the length of the rectangle is `20`.

The area of the rectangle is equal to `"length"times"width"=10times20=200`