The diameter of a wheel is 1.4m. If this wheel rotates 500 rotations, how long…

Solution:

Use the circumference of the wheel (distance per rotation).

Formula: Circumference = π × diameter

• Diameter = 1.4 m.

• Circumference = (22/7) × 1.4 = 4.4 m per rotation.

• Total distance = 4.4 × 500 = 2200 m.

Common mistake: using the radius instead of the diameter halves the result (gives 1100 m). Always use diameter in the circumference formula.