把一个底面直径为40cm的金属圆锥体浸没在底面直径为80cm的圆柱形玻璃杯内,这时杯中水面比原来升高3cm.
⅓h=12==> h=36"}}}'>

1个回答

  • (80/2)^2 xπxh'+⅓(40/2)^2xπxh=(80/2)^2xπx(h'+3)

    ==>⅓h=12

    ==> h=36