在墙角有一堆沙，呈 1 4 圆锥形（如图所示），沙堆顶点在两墙面交界线上，沙堆底面是半径为2

middle" cellpadding="-1" cellspacing="-1"> = 2 ×0.6× 1

3

×3:inline-table:1px solid black"> 1 4 ，
=0;vertical-align:1px solid black"> 1 3 ×3:middle" cellpadding="-1" cellspacing="-1"> 1 4 .628（立方米）;vertical-align；
答:middle" cellpadding="-1" cellspacing="-1"> middle" cellpadding="-1" cellspacing="-1"> = 2 ×0.6× 1

3

×3:inline-table:1px solid black"> 1 4 ，
=0;vertical-align:1px solid black"> 1 3 ×3:middle" cellpadding="-1" cellspacing="-1"> 1 4 .628（立方米）;vertical-align；
答:middle" cellpadding="-1" cellspacing="-1">