$70

35

$43

ive got like half a jar of canadian coins. i should take them to the bank too.

Every time I've taken my jar in (about every 6 months it fills up), they hand back the Canadian coins. You might have better luck, though!

$125. I could be over estimating, but I think that's a good guess. :)

(1+5+10+25/4)(radius in centimeters)(pi)(height in centimeters)

Among other things, that assumes a solid mass of metal, and doesn't consider the volume of a coin.

$41

$83 - looks like a lot of quarters in there.

$20

Ooooh, you sure? That's kinda high!

I watch The Price is Right, I know what I'm doin.... :)

Oh, if it's Price is Right rules....

$1.

$52.

That's an awesome jar. I ought to take ours to the bank.

We could do this: if you're right, you win the amount in the jar, and if you're wrong, I win the difference between your guess and the actual amount. Whaddya say?

37.53 or 68.19

since we seem to be doing it price is right style, I'm going to guess $83.01

I wouldn't be surprised if it was closer to $100, though

71.93. Lots of quarters, but narrow jar. :)

24.56

Serious guess: $42.

With a doff of the cap to Douglas Adams.

My guess: $29.96