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May 18, 2017
harpazo
25.71 = 3.142x + 2x
25.71 = 5.142x
25.71/5.142 = x
5 = x
If x = radius, then your radius is 5.
25.71 = 5.142x
25.71/5.142 = x
5 = x
If x = radius, then your radius is 5.
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Combine like terms for: 5.142r = 25.71
You will find that the radius is 5. The diameter is 10.
If you are using 3.142 to represent pi, you can check using the formula for perimeter of pi times diameter/2 for a semi circle. Don't forget to add the line segment for the rest of perimeter....See More