Central angle=360dgree*A/(pie*r*r).
r*cos(Central angle/2)=r-H.
H=r(1-Cos(A/Pi*r^2)*180).
回复:unless you need the analytical solution, just use excel with
本帖于 2010-04-08 18:00:37 时间, 由版主 于德利 编辑
Central angle=360dgree*A/(pie*r*r).
r*cos(Central angle/2)=r-H.
H=r(1-Cos(A/Pi*r^2)*180).
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