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Arc length and circular sector

Stift.gif   Task

Calculate arc length b and sector A supposing a radius r of 10cm and an angle α of 120°.

bitte warten

bitte warten

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See also: Using the Formel-Applet

Information icon.svg Solution

b=  20π/3    (Select the red area to see the solution)

A=  100π/3    (Select the red area to see the solution)