If the wheel of a tricycle rotates 200 times in 44 km, what is its radius?
Answer & explanation
Correct answer: option 1
⇒ No. of rotation = 200
⇒ Distance covered = No. of rotations × circumference
⇒ 44000m = 200 × 2πr
⇒ \(\frac{44000 × 7}{200 × 2 × 22}\) = r
⇒ r = 35 m