Question

Bicycle makes 7000 revolutions in moving 22 km. What is radius of the wheel

Answer 1

Explanation:

circumference of wheel = 2πr

no of revolutions = 7000 ×22

= 154000..

so now, 2πr7000=154000

2×22/7×r = 22000

2r= 22000.7/22

r = 7000/2

r = 3500m × 10-³

r = 3.5 km