圆形环体积计算
计算结果
体积
重量
圆形环体积
= 断面圆的面积 × 圆周长(半径为圆环中心到断面圆心)= [ π (\(\\[6pt] {{D - d} \over 4} \)) 2 ] [ 2 π (\( {{D + d} \over 2} \)) ]
= \( \\[6pt] {1 \over 16} \) π 2 (D + d) (D - d) 2
圆形环体积
= 断面圆的面积 × 圆周长(半径为圆环中心到断面圆心)= [ π (\(\\[6pt] {w \over 2} \)) 2 ] [ 2 π (\( {{D - w} \over 2} \)) ]
= \( \\[6pt] {1 \over 4} \) π 2 w 2 ( D - w )
圆形环体积
= 断面圆的面积 × 圆周长(半径为圆环中心到断面圆心)= [ π (\(\\[6pt] {w \over 2} \)) 2 ] [ 2 π (\( {{d + w} \over 2} \)) ]
= \( \\[6pt] {1 \over 4} \) π 2 W 2 ( d + w )