If a wheel has diameter 42 cm, then how far does the wheel go ( in metres) in 12 revoution ?( Take π = )
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 15.84
The diameter of wheel = 42 cm
r = 42/2 = 21 cm
n = 12
Total distance covered by the wheel = 2πrn
= 2 × (22/7) × 21 × 12
= 1584 cm
= 1584/100 = 15.84 m