Question

1. Calculate the area of a major segment whose chord subtends angle of 85 at the centre of a circle of radius 3cm. 2. A solid cone has a base radius of 3cm and a vertical height of 21cm. Calculate its volume.

Answer 1

2.193 and

Explanation:

Area of Segment = πr²θ/360 -½r²sinθ

=π*3²*85/360-½*r²sin85

= 2.193cm²

volume of cone= ⅓πr²h

=⅓*π*3²*21

=198 cm³