# Math Help - Expressions

1. ## Expressions

I am very unsure about how to tackle this problem.

2. The 2nd and 6th boxes are right i think.

Becos they have $something^3$

3. Originally Posted by janvdl
The 2nd and 6th boxes are right i think.

Becos they have $something^3$
and the seventh.

RonL

4. Why Captain? Because it's a side multiplied by a side squared?

Hmm, didn't see that one.

5. Originally Posted by janvdl
Why Captain? Because it's a side multiplied by a side squared?

Hmm, didn't see that one.
yeah, it kind of looks like the volume of a cylinder to me (with height = 3b and radius = c), but maybe Captain was thinking of something else

6. Originally Posted by Jhevon
yeah, it kind of looks like the volume of a cylinder to me (with height = 3b and radius = c), but maybe Captain was thinking of something else
May be I'm thinking of dimensional analysis. Case 7 is [L][L]^2 = [L]^3 which
is all that is needed for it to be a possible volume.

RonL

7. Of course, any of them can have "hidden" units, where the constant (such as the $\pi$) carries a unit with it...

-Dan