The area of the rectangle is 5.12 m²; one of its sides is 3.2m. Find the rectangle override.

It is known from the condition that the area of ​​the rectangle is 5.12 m2, and one of its sides is 3.2 m. In order to find the perimeter of the rectangle, we first of all have to find the length of the second side of the rectangle.

To do this, remember and apply the formula for finding the area of ​​a rectangle.

So, S = a * b, where a and b are the lengths of the sides of the rectangle.

Let us express from the formula the length of one side through the area and the length of the second side.

b = S / a;

Substitute the known values ​​and calculate:

b = 5.12 / 3.2 = 1.6 m is the length of the second side of the rectangle.

We are looking for a perimeter:

P = 2 (a + b) = 2 (3.2 + 1.6) = 2 * 4.8 = 9.6 m.