Source: Exemplar

Each side of a regular hexagon is 3.5cm long. The perimeter of the given polygon is

Options

Option A

17.5cm

Option B is correct

21cm

Option C

18.3cm

Option D

20cm

Explanation

A regular hexagon has 6 equal sides. The perimeter is the sum of the lengths of all sides. Perimeter = 6×side length=6×3.5 cm=21 cm6 \times \text{side length} = 6 \times 3.5 \text{ cm} = 21 \text{ cm}.