英轉中牙!~~~唔該!!~~
1.If the volume of a solid with uniform cross-section is 400 cm(3), the cross-section area
is 25 cm(2), find its length.
2.A rectangular meyallic bar of dimensions 4 cm x 6 cm x 8 cm is melted and and
recast into a solid with uniform cross-section area of the solid is 12 cm(2), find its
length.