一个圆柱体与一个圆锥体的高相等，圆柱体与圆锥体的体积比是6：1，圆锥的底面积是 12.56平方厘米．圆柱的底面积是多少平方厘米？
直接写得数．+= 3﹣1.75=÷=×=×=÷=÷=×0+3=（+）×=
直接写出得数．+=﹣=×2=×=÷3×÷3== 12×=×14=÷4=+÷+=
直接写得数+= 3+1.75=÷=×=×=﹣=+=×0+3= （+）×=×÷×=
口算下面各题．﹣=+=﹣= 2÷=×6=÷=×6=×=﹣=÷=÷=×=×=÷=÷= 6.4÷0.08= 4﹣2.92=÷=
直接写得数： 1﹣=×=÷2÷= 2×80%=+= 15÷= 35×=×÷×=
+
= 3
﹣1.75=
÷
=
×
×
=
÷
=
÷
=
×0+3=（
+
）×
=
+
=
﹣
=
×2=
×
=
÷3×
= 12×
=
×14=
÷4=
+
+
+
= 3
+1.75=
÷
=
×
=
×
=
﹣
=
+
=
×0+3=
+
）×
=
×
÷
×
﹣
=
+
=
﹣
= 2÷
=
×6=
÷
=
×6=
×
=
﹣
÷
=
÷
=
×
=
×
=
÷
=
÷
= 6.4÷0.08= 4﹣2.92=
÷
=
=
×
=
÷2÷
+
= 15÷
= 35×
=
×
÷
=
粤公网安备 44130202000953号