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.

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Mathematics

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12 July, 22:35

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.

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Cameron Miller · Answer 1

2.193 and

Step-by-step 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