# The sides of the rectangle are 5cm and 3cm a) find its perimeter and area b) how will the perimeter

The sides of the rectangle are 5cm and 3cm a) find its perimeter and area b) how will the perimeter and area of the rectangle change if each side of it is reduced by 2 cm? Find the perimeter and area of the new rectangle

The perimeter (the sum of all sides) of a rectangle is calculated by the formula P = a * 2 + b * 2, and the area (product of the sides) by the formula S = a * b, where a is the height of the rectangle, b is the width. We substitute our values into these formulas.

1) P = 5 * 2 + 3 * 2 = 10 + 6 = 16 (cm).

2) S = 5 * 3 = 15 (cm 2).

If each side is reduced by 2 cm, then:

3) 5 – 2 = 3 (cm) – height.

4) 3 – 2 = 1 (cm) – length.

Find the perimeter and area of the new rectangle.

5) P = 3 * 2 + 1 * 2 = 6 + 2 = 8 (cm).

6) S = 3 * 1 = 3 (cm2) One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.