Expressions

**GAdams** · July 2nd 2007, 11:31 AM

I am very unsure about how to tackle this problem.

**janvdl** · July 2nd 2007, 11:36 AM

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

Becos they have $something^3$

**CaptainBlack** · July 2nd 2007, 01:16 PM

Originally Posted by janvdl

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

Becos they have $something^3$

and the seventh.

RonL

**janvdl** · July 2nd 2007, 01:18 PM

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

Hmm, didn't see that one.

**Jhevon** · July 2nd 2007, 01:25 PM

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

**CaptainBlack** · July 2nd 2007, 07:38 PM

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

**topsquark** · July 3rd 2007, 02:44 AM

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

-Dan

Thread: Expressions