一个圆锥底面周长94.2分米,高与底面直径相等,它的体积是多少?
= :24=5:8= :40= %
3÷ ==0.75=6: = %
3÷ ==0.6=6: = %.
3:5==9: == .
=0.375=12÷ = %=0.45= %= ÷ .