A piece of strings is 30 cm long. What will be the length of each side if the string is used to form: (a) a square? (b) an equilateral triangle? (c) a regular hexagon?

Solution:

Length of the string =30

(a) Perimeter of square = 30 cm

4 × side = 30

Side = 30 / 4

Side of the square = 7.5 cm

(b) Perimeter of an equilateral triangle = 30 cm

3 × side = 30

Side = 30 / 3

Side of an equilateral triangle = 10 cm

(c) Perimeter of a regular hexagon = 30 cm

6 × side = 30

Side = 30 / 6

Side of a regular hexagon = 5 cm

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