Question

Length of a string is 50 cm long . Find the length of each side is used to form a square , equilateral triangle and a regular Pentagon

Answer 1

Length of String = 50 cm

1) For square,

Perimeter = 4 x side

∴50  = 4 x side

∴side = 50/4

∴side = 12.5 cm

2) For equilateral Triangle,

Perimeter = 3 x side

∴50 = 3 x side

∴ side = 50/3

∴ side = 16.67 cm

3) For regular Pentagon,

Perimeter = 5 x side

∴ 50 = 5 x side

∴ side = 50/5

∴ side = 10 cm

Answer 2

Length of String = 50 cm