# Question #09bb3

##### 1 Answer

Perimeter of rectangle =

#### Explanation:

Given: The perimeter of a rectangle is three times its length.

So, if length =

then perimeter

But we know that perimeter of a rectangle is:

Given that :width

We substitute values from (1) and (3) in (2):

(2)

( We can also say that as the left hand side of (1) and(2) are equal, equating the right hand sides we get--)

Now substitute this value of

(1)