9x3/2 is 27/2. not 6. 9x 2/3 is 6. root13.5/pi= ~2 I got r to be 2.07 and h to be 0.43. which makes sense when substituted back to the surface equation , it equals 18.
I know this comment is from a year ago but to anyone wondering the same thing, think of ‘r’ as r/1 then multiply. The r only gets distributed into the numerator not denominator
![How to Solve ANY Optimization Problem [Calc 1]](http://i.ytimg.com/vi/cUMvwG7wvzM/mqdefault.jpg)
9x3/2 is 27/2. not 6.
9x 2/3 is 6.
root13.5/pi= ~2
I got r to be 2.07 and h to be 0.43.
which makes sense when substituted back to the surface equation , it equals 18.
At 3:07 you times out “r” to remove the bracket however why does the denominator not become 2r? great video!
I know this comment is from a year ago but to anyone wondering the same thing, think of ‘r’ as r/1 then multiply. The r only gets distributed into the numerator not denominator
isnt the surface area 2pir2 + 2pirh????
Notice how it says the cylinder has no lid?
Thx prof
iska app banva do ???