A wheel has diameter 84 cm, then how far does the wheel go (in metres) in 16 revolutions? (Take $π =\frac{22}{7}$)
Answer & explanation
Correct answer: option 1
Radius of the wheel = \(\frac{84}{2}\) = 42 cm
Circumference of the wheel = 2 πr = 2 × \(\frac{22}{7}\) × 42 = 264 cm = Distance covered by the wheel in 1 revolution
Distance covered by the wheel in 16 revolution = 16 × 264 = 4224 cm or 42.24 m