Question

A metal cube with an edge of one foot is melted into a rectangular solid one eighth of a foot in height. What is the area of the top of the new solid?

a-1/64 square ft
b-1/8
c-1/4
d-4
e-8

Answer 1

We know that the volumes must be the same.
We know that the volume of a rectangular solid is lwh
So the volume of the cube is 1x1x1 or 1
Therefore the volume of the rectangular solid is also 1
The height is 1/8
So 1/8(lw)=1
And lw is the area of the top of the new solid.

Answer 2

So is it E?

Answer 3

Yes. 1/8 times 8 = 1