If the wheel of a tricycle rotates 200 times in 44 km, what is its radius?

35 m 28 m \(\frac{50}{7}\) m \(\frac{35}{7}\) m

35 m

⇒ No. of rotation = 200 ⇒ Distance covered = No. of rotations × circumference ⇒ 44000m = 200 × 2πr ⇒ \(\frac{44000 × 7}{200 × 2 × 22}\) = r ⇒ r = 35 m