SOLUTION: Regular pentagon PQRST is inscribed in circle U. PU= 10 cm. find the length of arc PS to the nearest tenth of a centimeter
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-> SOLUTION: Regular pentagon PQRST is inscribed in circle U. PU= 10 cm. find the length of arc PS to the nearest tenth of a centimeter
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You can put this solution on YOUR website! The center and the five points on the circle form five isosceles triangles. The one tip angle of each triangles is 360/5=72 degrees, and the two equal sides of each triangle are PU=10 cm. each.
What this question really seems to need is that from P to S is 3/5 the way around the circle, and that you already have the radius, PU=10, and can take 3/5 of the circumference. That seems to be all that you need.
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