Analysis and Approaches for IBDP Maths Ebook 1 | Page 123

Front Page
Exercise 41
1. The following diagram shows a circle with centre O and radius 55 cm.
The points A , B and C are on the circumference of the circle and
(a) Find the length of arc ABC .
(b) Find the perimeter of sector OABC .
(c) Find the area of sector OABC .
AOC ˆ � 2.7 radians .
[3]
[2]
[2]
2. The following diagram shows a circle with centre O and radius 20 cm.
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The points A , B and C are on the circumference of the circle and
(a) Find the perimeter of sector OABC .
(b) Find the area of sector OABC .
AOC ˆ � 0.95 radians .
[4]
[2]
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