Brynn G.
asked • 03/25/18The perimeter of a semicircle is 20.56 feet. What is the semicircle's diameter?
use 3.14 for pi
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1 Expert Answer
Carol H. answered • 03/25/18
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Experienced Mathematics Tutor w/ Master's Degree in Math
C = (1/2)πd
20.56 = (1/2)(3.14)d
20.56 = 1.57d
13.1 feet ≈ d
As Mark mentioned, this does not include the diameter as part of the perimeter.
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Mark M.
03/25/18