A piece of string 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?
(a) Given that,
Perimeter of square = 30 cm
We know that,
Perimeter of square = 4 × Side
30 = 4 × Side
Side = 
= 7.5 cm
Therefore, side of square is 7.5 cm
(b) Given that,
Perimeter of equilateral triangle = 30 cm
We know that,
Perimeter of equilateral triangle = 3 × Side
30 = 3 × Side
Side = 
= 10 cm
Therefore, side of equilateral triangle is 10 cm
(c) Given that,
Perimeter of a regular hexagon = 30 cm
We know that,
Perimeter of regular hexagon = 6 × side
30 = 6 × Side
Side = 
= 5 cm
Therefore, side of regular hexagon is 5 cm
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