Arc

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

Correct result:

x =  18.33 m

Solution:

d=20 m r=d/2=20/2=10 m h=6 m  x=2⋅ r2−(r−h)2=2⋅ 102−(10−6)2=4 21=18.33 m

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