program that calculates volume: http://tinyurl.com/m7b4yzr
I didn't put any error checking or anything like that because cbf so if you enter negatives or letters then it will crash
inb4peoplesayit'savirus
I'd say making a legitimate educated guess would a better idea
lel that actually that might work; I remember bunnings was giving jelly beans with paint so maybe ask their paint department if you can borrow some jelly beans