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secondary 4 | E Maths
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Date Posted: 7 years ago
Views: 473
The breadth of the track is 200m. This is also the same as the diameter of the semicircle.
From there you can find the perimeter of a whole circle by pi × diameter, and the perimeter of the semicircle is half of that.
You now have the arc length of the semicircle, and hence you can answer the other parts.
Try it out!
From there you can find the perimeter of a whole circle by pi × diameter, and the perimeter of the semicircle is half of that.
You now have the arc length of the semicircle, and hence you can answer the other parts.
Try it out!
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This is the answer
Date Posted:
7 years ago
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