Ответ:
D=2R=2*3=6
h=
S=2πR(R+h)=2π*3(3+8)=2π*33=66π=66*3,14=207,24
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Ответ:
D=2R=2*3=6
h=
S=2πR(R+h)=2π*3(3+8)=2π*33=66π=66*3,14=207,24