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OpenStudy (anonymous):
Find the exact area of a circle having the given circumference. 4(sqrt3pi)
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OpenStudy (saifoo.khan):
find the Radius first.
OpenStudy (anonymous):
Use the equation for circumference C = 2pi*r. Solve for r and then use that value in the equation for area A = pi*r^2
OpenStudy (saifoo.khan):
C = pi d 4(sqrt3pi) -------- = d pi
OpenStudy (saifoo.khan):
d = 12.28 r = 6.14units
OpenStudy (saifoo.khan):
Area = pi r^2 = pi (6.12)^2 =118.44unitssq
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OpenStudy (anonymous):
@saifoo "exact area"
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