The sides of the pentagon are numbered. The first side is exactly 4 cm, and each next side is 2

The sides of the pentagon are numbered. The first side is exactly 4 cm, and each next side is 2 cm longer than the previous one. Calculate the perimeter of the pentagon.

The first side is 4 (see);

Subsequent sides – each 2 cm longer.

Means:
1) 4 + 2 = 6 (see) the second side;

2) 6 + 2 = 8 (see) third party;

3) 8 + 2 = 10 fourth side (see);

4) 10 + 2 = 12 fifth side (cm).

The perimeter is the sum of the lengths of the sides of the pentagon. Calculated by the formula: P = a + b + c + d + e

P = 4 + 6 + 8 + 10 + 12 = 40 (cm).

Answer: the perimeter of the pentagon is 40 (cm).