Erence Example 11
A circle has a radius of 7.5 cm. A sector
with an angle of 240° is cut out from the
circle.
a) Find the length of the arc of the sector.
b) If the sector is folded to form a cone,
find, correct to one decimal place:
i) the radius of the cone.
ii) the height of the cone.
iii) the volume of the cone.
iv) the curved surface area of the cone.
[Take a = 3.142]​