The diagram shows an arc of a circle with centre and radius 8. Angle is a right angle, the point is the midpoint of and lies on the arc so that is perpendicular to .
Which of the following is closest to the length of the perimeter of triangle ?
Select one option, then click Submit.
17
18
19
20
21
Select an option, then submit.
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Intermediate Mathematical Challenge 2017 (2017)
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