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Ok. The more I think about it, the more it makes sense. I just didn't understand at first how it would be physically possible.

Thanks!

Ok. So for example, Part B asks what the IROC is when the height is 2 metres...does that mean that it will be the same as if the height was 3 metres?

I've got one problem left on a math assignment that I can't figure out. I don't usually post stuff like this here, but this one really confuses me.

"A cylindrical drum with a radius of 1.5 metres...