Circular arc

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

Correct result:

x =  24.7837 cm

Solution:

d=20 m A=142∘  o=π⋅ d=3.1416⋅ 20≐62.8319 cm  x=A360⋅ o=142360⋅ 62.8319=24.7837 cm

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