(a)[1]
Demonstrate that the length of the major arc AB is $16\pi$ cm.
(b)[6]
Work out the volume of the cone. Give your answer in the form $\frac{(a\sqrt{b})\pi}{3}$ where a is an integer and b is a prime number.
Mathematics 0580 · IGCSE · Circles, arcs and sectors
Circles, arcs and sectors — practice question
The diagram depicts a major sector, AOB, of a circle. Its angle is 240^{\circ} and the radius measures 12 cm.