Question

from nd the diameter of a wheel whose circumference is 264 cm

Answer 1

Given that the circumference of wheel = 264 cm

So

2πr = 264             { circumference = 2πr  ]

⇒ r = 264/2π

⇒ r = 132/π

⇒ r = 132×7/22          [ since π = 22/7 ]

⇒ r = 6×7

⇒ r = 42 cm

So radius of a wheel = 42 cm

Hence diameter of a wheel = 2r = 2×42 = 84 cm