
Kayla L.
asked 04/07/18whats the diameter of 7.85pi
its . amath problem
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1 Expert Answer

Andrew M. answered 04/08/18
Tutor
New to Wyzant
Mathematics - Algebra a Specialty / F.I.T. Grad - B.S. w/Honors
As Carol noted, you have not told us what is represented by 7.85π ::
If d = 7.85pi then d = 7.85(3.14) = 24.66
If 7.85pi is the circumference:
2πr = 7.85
πd = 7.85
d = 7.85/π = 2.5
If 7.85pi is the circumference:
2πr = 7.85
πd = 7.85
d = 7.85/π = 2.5
If 7.85π is the area then:
πr2 = 7.85
r2 = 7.85/π
r2 = 2.5
r = √2.5
r = 1.6
d = 2r = 3.2
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Carol H.
04/07/18