圆柱的底面直径是60mm,高为100mm,圆锥的底面直径是120mm,且圆柱的体积比圆锥的体积多一半,求圆锥的高
2个回答

设圆锥的高是x

3.14*60/2*60/2*100=3.14*120/2*120/2*x*(1+1/2)

x=50

即圆锥的高是50mm