1.解:50厘米=0.05米,V=底面积X高=πXR^2Xh=3.14X10^2X(4.5+0.05)=1428.7立方米2解:H=125.6/(3.14X2^2)=10厘米3.解燃猜:液渗V=3.14X(10/2)^2X2=157立闹段脊方厘米4.解:16X2.4X1.7=108.8吨