A sector of a circle of radius r cm has an angle radians, where The perimeter of the sector is 30 cm a Show that the area, A cm 2 , of the sector is given by A 15r r 2 b Given that r can vary, find the maximum area of the sector ...

a To find the area of the sector we can use the formula for the area of a sect ...

A sector of a circle of radius r cm has an angle radians, where <

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A sector of a circle of radius r cm has an angle θ radians, where θ < π. The perimeter of the sector is 30 cm.

a. Show that the area, A cm², of the sector is given by A = 15r – r².

b. Given that r can vary, find the maximum area of the sector.

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Cambridge IGCSE And O Level Additional Mathematics Coursebook

ISBN: 9781108411660

2nd Edition

Authors: Sue Pemberton

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Question Posted: Sep 01, 2021 01:06 AM

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A sector of a circle of radius r cm has an angle radians, where <

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Cambridge IGCSE And O Level Additional Mathematics Coursebook

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