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16-06-2018
Mathematics

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For a circle of radius 4 feet, find the arc length of a central angle of 60°.

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calculista calculista

25-06-2018

we know that
circumference C=2*pi*r
for r=4 ft
C=2*pi*4-----> 25.12 ft

by proportion
25.12/360°=L/60°---------> L=60°*25.12/360°-----> L=4.19 ft

the answer is
4.19 ft

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