If the perimeter is 60 then the special rectangle (a square) has sides of 15 each.

<< Yes, a square is a rectangle - it is a special case (or kind) of rectangle.>>

To get the area we multiply the length and width - i.e. 15 x 15 or 15 squared.

If you know about the square function, you understand squared number get larger very quickly.

Much more quickly than just multiplying two numbers.

So test it - what are the sides of a rectangle that isn't a square?

What about the rectangle that has two sides 14 - what are the other two sides?

Multiply that out and see if it is bigger or smaller than 15 squared.

## Comments