# The width of the rectangle is 4 cm. What is the area of the rectangle if its length is 4 cm (8 cm; 16 cm)?

**The width of the rectangle is 4 cm. What is the area of the rectangle if its length is 4 cm (8 cm; 16 cm)? How many times will the area increase if the length is increased several times and the width is left unchanged?**

A rectangle is a geometric shape, a quadrangle, with all angles straight (that is, equal to 90 degrees).

1) The area of a rectangle is equal to the product of its sides: S = a * b, where a is the length of the rectangle, b is the width of the rectangle.

2) By the condition of the problem, the width of the rectangle is 4 cm, the length is 4 cm, then S = 4 * 4 = 16 cm ^ 2.

3) If the length of the rectangle is 8 cm, then S = 4 * 8 = 32 cm ^ 2.

4) If the length of the rectangle is 16 cm, then S = 4 * 16 = 64 cm ^ 2.

Each time the length increases, the area doubles.