# en: Unterschied zwischen den Versionen

## Arc length and circular sector

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

bitte warten

bitte warten

 Note Click inside the bright gray box. It turns turquoise. Enter your solution. You may also use the menu, which is available via rightclick. Complete your input with the RETURN-key. Green: right. Orange: wrong See also: Using the Formel-Applet
 Solution $b=$  20π/3    (Select the red area to see the solution) $A=$  100π/3    (Select the red area to see the solution)