# Circular arc - examples

- Circular arc

Calculate the length of the circular arc if the diameter d = 20cm and the angle alpha = 142 ° - A bridge

A bridge over a river is in the shape of the arc of a circle with each base of the bridge at the river's edge. At the center of the river, the bridge is 10 feet above the water. At 27 feet from the edge of the river, the bridge is 9 feet above the water. H - Track arc

Two straight tracks is in an angle 74°. They will join with circular arc with radius r=1127 m. How long will be arc connecting these lines (L)? How far is the center point of arc from track crossings (x)? - Arc

Calculate span of the arc, which is part of a circle with diameter d = 20 m and its height is 6 m.

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