21-05-2017
Mathematics

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Does anyone know how to do 7a?

Does anyone know how to do 7a class=

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brownj523 brownj523

21-05-2017

Calculate the circumference of the two semi circles, which equals a full circle. Then add the two sides of the track.
Circumference is pi x diameter = 3.14 x 22.8 = 71.592, so, you would need to add 71.592 + 49.2 + 49.2 = 169.992 meters, and that would be the length of one lap of the track.

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