Arc of a circle

 A circular arc.

Enter two values. Other values will be calculated.

arc length

For arcs the following formulas hold:
Area = pi*Radius^2*(alpha/360)
Arc length = 2*pi*Radius*(alpha/360)


What is an arc?

Ein Kreisbogen.An arc is a part of a circle. It is gotten by just calculating a certain angle of a circle. Formulas for arcs are similar to circle formulas, but mind that you only have a part of the circle.
The formulas for the arec are: If the angle is alpha, the area is A=pi*r^2*(alpha/360) and the arc length is b=2*pi*r*(alpha/360).

Fur further information, move the mouse over the words below, and the corresponding piece will be marked below.

arc length
angle alpha


An arc is part of a circle. Mathepower can calculate them given two measurements. Just enter your exercise and it will be solved.