So we add all the numbers together (20 + 30 + 40 + 38 + 25 + 22 + 39 + 22 + 26 + 31 ) and then divide it by how many values there are. So all the numbers added is 293 then divided by 10 is 29.3 minutes.
The average, also the mean, is all the numbers added together and then divided by the amount of numbers there, here, all the numbers added together are 20 + 30 + 40 + 38 + 25 + 22 + 39 + 22 + 26 + 31 = 293
There are a total of 10 numbers here, so 293/10 = 29.3
339=2pir(h+r) 339=2pi3(h+3) 339=6pi(h+3) divide both sides by 6pi 56.5/pi=h+3 minus 3 both sides (56.5/pi)-3=h (56.5-3pi)/pi=h v=hpir^2 v=((56.5-3pi)/pi)(pi)(6)^2 v=(56.5-3pi)(36) v=2034-108pi use pi=3.141592 v=1694.7079934123023302460345146058 round 1695 cubic cm
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