In the diagram, OAB is a sector of a circle with centre O and radius 8cm. Angle

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In the diagram, OAB is a sector of a circle with centre O and radius 8cm. Angle BOA is α radians. OAC is a semicircle with diameter OA. The area of the semicircle OAC is twice the area of the sector OAB.

i. Find α in terms of π.
ii. Find the perimeter of the complete figure in terms of .

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Cambridge International AS And A Level Mathematics Pure Mathematics 1 Coursebook

ISBN: 9781108407144

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Authors: Sue Pemberton, Julian Gilbey

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Question Posted: Mar 09, 2023 07:05 AM

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In the diagram, OAB is a sector of a circle with centre O and radius 8cm. Angle

Question:

0 8 cm a rad 8 cm C B A

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i The area of the sector OAB is given by Asector 2 x r2 2 x 82 32 The area of the semicircle OAC is ...View the full answer

Cambridge International AS And A Level Mathematics Pure Mathematics 1 Coursebook

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