完整圆角需要几组面_圆弧窗下玄1.17米,圆弧高0.39米的面积是多少?

圆弧窗下玄1.17米,圆弧高0.39米的面积是多少?
窗下玄L=1.17米,圆弧高H=0.39米的面积S少?
弧半R所对的圆心角为A 。
R=H/2 L^2/(8*H)
=0.39/2 1.17^2/(8*0.39)
=0.63375米
A=2*ARC COS((R-H)/R)
=2*ARC COS((0.63375-0.39)/0.633755)
=134.76
S=π*R^2*A/360-L*R*COS(A/2)
=π*0.63375^2*134.76/360-1.17*0.63375*COS(134.76/2)
=0.1871米