Originally Posted by

**Volcanicrain** I'm not so sure I understand the points you've put forward to be honest (I feel kind of dumb!)

My friend and I found something about the surface area of the bottom of the boat - it has to be of a certain amount for the boat to be able to float in water (if it's too small it would sink).

Then we found volume - something about if the volume of water that has been displaced when the sail goes in the water, we can thus calculate that of the boat that is in the water...

I'm really not sure. My teacher sure loves complicated things.

What's hard though is that we can only refer to integrals, its applications and series - not derivatives X_X