The perimeter of the rectangle is 50 cm and its length is 15 cm. What is the area of this rectangle?

A rectangle is a rectangle with equal opposite sides and right angles.

The perimeter is the sum of all sides. For such a figure, it is determined by the formula:

P = 2a + 2b. Provided that this value corresponds to 50 cm, and the length is 15 cm, we find the width:

2b = P – 2a = 50 – 2 * 15 = 50 – 30 = 20. To find the second factor, divide the product by the first:

b = 20: 2 = 10 cm.

Area (numerical characteristic of a two-dimensional geometric figure) is calculated by the formula:

S = a * b = 15 * 10 = 150 cm².