Interpreting expressions with multiple variables: Cylinder | Modeling | Algebra 2 | Khan Academy

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Given the vale and the expression for the radius of a cylinder, find the radius of a cylinder with the same volume and 100 times the height. This involves analyzing the expression for the radius to see how changing the height affects the radius.
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Alternatively, since you know the volume is constant, you can solve the equation for V, set it up so V1 = V2, so 400*pi*h = 100*pi*h*r^2 and solve for the radius.

the.jk.adventures
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Khan you are my Mentor from Nigeria 🇳🇬.

ImmaculateMaths
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Which software do you use to write in the video?? Or How do you write?? Please tell something. Help me...

tusharsindhu
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Good morning.
Even you explain with well, I'm still feel a slightly confused about this. I will try to rewatch few more times to the teaching clip. Thank you sir.

peggylimtingting
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Which tool he is using to write....Anyone knows....Please Mention in Comments

skillxploreupdaexamqatar
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i am surprised that you do not have you tube comments disable or turned off with i do find rude

chrisclack
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some of your khan academy videos do not help me at all

chrisclack