R=148,H=34.7
弧所对的圆心角为A,弧长为C.
A=ARC COS((R-H)/R)
=ARC COS((148-34.7)/148)
=40.045度
=40.045*PI/180
=0.698915弧度
C=R*A=148*0.698915=103.44
R=148,H=34.7
弧所对的圆心角为A,弧长为C.
A=ARC COS((R-H)/R)
=ARC COS((148-34.7)/148)
=40.045度
=40.045*PI/180
=0.698915弧度
C=R*A=148*0.698915=103.44