Question

A wheel of radius 30 cm, climbing over a ramp, rotates through an angle of ${72}^{\circ }$ to cover ${\frac{1}{18}}^{th}$ of the ramp. If the ramp is ${30}^{\circ }$ inclined to the ground, what is the height of the ramp (in cm)?

• A. $66\pi$
• B. $94\pi$
• C. $108\pi$
• D. $120\pi$

Answer 1

The correct option is C $108\pi$