资源描述
,北师大版六年级数学下册,练 习 一,3.143,2,6.5=,183.69,(,cm,3,),3.14,(,82,),2,6=,100.48,(,cm,3,),856.5=,260,(,cm,3,),444=,64,(,cm,3,),350,34,2.3,6500,83,4000,4,3.14,(,125.63.142,),2,15=,18840,(,m,3,),答:这个城堡的体积是,18840,立方米。,3.1427=,43.96,(,cm,2,),3.14,(,22,),2,7=,21.98,(,cm,3,),答:至少需要,43.96cm,2,的纸,,这个糖果盒的体积是,21.98cm,3,。,40cm=0.4m,60cm=0.6m,3.14,(,0.42,),2,2=0.2512,(,cm,2,),3.140.40.6=0.7536,(,cm,2,),(,0.2512+0.7536,),1000.6=60.288,(,kg,),答:刷,100,个油桶需要,60.288,千克油漆。,长方体,正方体,圆柱,(,5030+5015+3015,),2=,5400,(,cm,2,),556=,150,(,cm,2,), 3.14610+3.14,(,62,),2,=,244.92,(,cm,2,),分析:因为甲、乙两个容器是,等底等高,,所以圆锥甲的体积,是圆柱乙的体积的 ,即是乙容器高的 。,12 =4,(,cm,),答:这时乙容器中的水有,4cm,。,502010,3.14,(,202,),2,32,(,cm,),答:圆柱形钢柱有,32cm,。,3.14,(,22,),2,1.5=,4.71,(,m,3,),3.14,(,22,),2,0.6=,0.628,(,m,3,),(,4.71+0.628,),700=,3736.6,(,kg,),答:这个粮仓最多能装,3736.6,千克粮食。,都可以用“,V=S,h,”,16cm,4cm,2.55cm,64cm,2,81.67cm,3,8cm,8cm,1.27cm,64cm,2,40.52cm,3,4cm,16cm,0.64cm,64cm,2,20.58cm,3,2cm,32cm,0.32cm,64cm,2,10.29cm,3,当侧面积一定时,越是细、长的圆柱体积越小,越是粗、矮的圆柱体积越大。,16cm,4cm,2.55cm,64cm,2,81.67cm,3,8cm,8cm,1.27cm,64cm,2,40.52cm,3,4cm,16cm,0.64cm,64cm,2,20.58cm,3,2cm,32cm,0.32cm,64cm,2,10.29cm,3,成立,
展开阅读全文