= | mm |
= | ° |
Radius | r = | - | mm | |||
Durchmesser | d = | - | mm | |||
Durchmesser (Ring) | di = | - | mm | dm = | - | mm |
Breite | b = | - | mm | |||
Sehnenlänge | l = | - | mm | |||
Bogenlänge | lB = | - | mm | |||
Mittelpunktswinkel | α = | - | ° | α = | - | rad |
Umfang | U = | - | mm |
Fläche | A = | - | mm² |
Mittelpunkt | M = | ( | - | | | - | ) mm = Koordinatenursprung |
Schwerpunkt | S = | ( | - | | | - | ) mm |
Radius | \[ r = \frac{d}{2} \] |
Umfang | \[ U = \pi \cdot d \] |
Fläche | \[ A = \frac{ \pi \cdot d^2 }{4} \] |
mittlerer Durchmesser | \[ d_m = \frac{1}{2} \cdot ( d + d_i ) \] |
Breite | \[ b = \frac{1}{2} \cdot ( d - d_i ) \] |
Fläche | \[ A = \pi \cdot d_m \cdot b = \frac{ \pi }{4} \cdot ( d^2 - d_i^2 ) \] |
Sehnenlänge | \[ l = d \cdot \text{sin } \frac{ \alpha }{2} \] |
Bogenlänge | \[ l_B = \frac{d}{2} \cdot \alpha \] |
Umfang | \[ U = l_B + d \] |
Fläche | \[ A = \frac{ l_B \cdot r }{2} = \frac{ d^2 }{8} \cdot \alpha \] |
Schwerpunkt | \[ S_x = 0 \] \[ S_y = \frac{d}{3} \cdot \frac{l}{l_B} \] |
Radius | \[ r = \frac{b}{2} + \frac{ l^2 }{ 8 \cdot b } \] | |
Sehnenlänge | \[ l = d \cdot \text{sin } \frac{ \alpha }{2} \] | \[ = 2 \cdot \sqrt{ b \cdot ( d - b ) } \] |
Breite | \[ b = \frac{l}{2} \cdot \text{tan } \frac{ \alpha }{4} \] | \[ = r - \sqrt{ r^2 - \frac{ l^2 }{4} } \] |
Umfang | \[ U = l_B + l \] |
Fläche | \[ A = \frac{ l_B \cdot r - l \cdot ( r - b ) }{2} = \frac{ d^2 }{8} \cdot \alpha - \frac{ l \cdot ( r - b ) }{2} = \frac{ d^2 }{8} \cdot ( \alpha - \text{sin } \alpha ) \] |
Schwerpunkt | \[ S_x = 0 \] \[ S_y = \frac{ l^3 }{ 12 \cdot A} \] |