How long can be the sides of a rectangle whose area is 40 m 2?

To solve this problem, we need knowledge with the following formula:
Formula for the area of a rectangle: S = a * b, where a is the length of the rectangle, b is the width of the rectangle.

Let’s first now determine what sides the rectangle can have, for this we use the formula for the area of a rectangle, then we get:
Straight = a * b = 40 m ^ 2;

And from this we can see that the sides of the rectangle will be:
a = 1, b = 40; and a = 40, b = 1.

a = 2, b = 20; and a = 20, b = 2;

a = 5, b = 8; and a = 8, b = 5;

a = 4, b = 10; and a = 10, b = 4;