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5 December, 12:45

In the diagram below, what is the approximate length of the minor arc DE?

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  1. 5 December, 13:08
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    You know 120º is 120/360 or 1/3 of a full circle so the length of arc XY is 1/3 the length of the entire circle (its circumference). C = π d and d = 2r so d = 46 cm; C = 46π so see what that is on your calculator then multiply it by 1/3 (divide it by 3).
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