Question

Find the length of a rectangle whose area is 144 cm and breadth is 9CM​

Answer 1

Answer: 16

Explanation:

The area of a rectangle can be found by multiplying its length and its height. You may consider the breadth as just another word for length.

A = L * W

Since we know what are area is, we may substitute it into the equation.

144 = L * W

We also know what our width (our breadth) is, so we will also substitute it in

144 = L * 9

To solve for our length, we divide both sides by 9 to isolate L

`(144)/(9) = (L * 9)/(9)`

We see that the two 9's on the right hand side cancel out to give us L

`(144)/(9) = 16`

So our L is equal to 16.

We can check our work by multiplying the length and breadth together again to see if they give 144 as a product, which they do.