Apps. and Interpretation for IBDP Maths Ebook 1 | Page 166

Your Practice Set – Applications and Interpretation for IBDP Mathematics
(c)
The area of sector OABC
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Exercise 44
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
AOC ˆ � 155 .
(a) Find the length of arc ABC .
(b) Find the perimeter of sector OABC .
(c) Find the area of sector OABC .
[3]
[2]
[2]
2. The following diagram shows a circle with centre O and radius 20 cm.
The points A , B and C are on the circumference of the circle and
AOC ˆ � 54.5 .
156
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