直径36cm 高50cm的圆柱瓶里放满饮料 现把饮 料到入底面直径10cm的圆住形小杯刚好36杯 求小杯的高

Let h be the height of the smaller cup
(36/2)(36/2)π*50=36*π(10/2)(10/2)h
16200=900h
h=18
Thus,the height of the smaller cup is 18cm