Sheet # 54 Critical Thinking
Name: _____________________ Date_____________
Show and explain your work. Draw pictures or make tables to explain your answer.
The radius of a circle O is 7 cm. Angle AOC measures 110 degrees. What is the perimeter of the shaded region to the nearest tenth?
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Answers for sheet # 54
Circumference of the circle = 2 x 3.14 x 7 cm = 43.96 cm
ratio of the angles of the shaded area to the total angle of circle = 110/360
Hence circumference of the shaded area = (110/360) x 43.96 cm = 13.43 cm