算一算。①r=8cm,h=2cm⑦r=1dm,h=15dmSM=Sm=Sm=S*=S表=②r=2dm,h=4dm⑧r=3m,h=5mSw=Sm=S底=Sk=S表=S表=③r=5m,h=5m⑨r=2cm,h=2cmSm=Sm=S底=Sm=S表=S表=④d=18m,h=20m⑩d=10m,h=5mSm=Sw=Sm=Sx=S表=S表=⑤d=15m,h=2.5m①C=125.6cm,h=10cmSw=Sm=S...