Volume of a cylinder

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Rob A
Rob A 2016-11-4
评论： John D'Errico 2019-2-25
I seem to have run in to a problem with an assignment part A- Having radius r1=8 and height h1=15 Calculate volume of cylinder V1 (formula v=pi*r^2*h)
>>r1=8
>>h1=15
>>V1=pi*(r1^2)*h1
Now here's the problem, Part B- Using h1 from part A find radius r2 of another cylinder V2 that has a volume greater by 20% than that of V1. If anyone could guide me through part B
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Adam
Adam 2016-11-4
What are you having trouble with? The maths or the coding of the maths? The coding seems very simple once you have written down the relevant equation.

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James Tursa
James Tursa 2016-11-4
Seems like you have this information:
V1 = pi*(r1^2)*h1 <-- this is all known
V2 = 1.2 * V1 <-- this is given
V2 = pi*(r2^2)*h1 <-- this is volume of V2 using r2 and h1
You just need to solve for r2 using the above.
  2 个评论
John D'Errico
John D'Errico 2019-2-25
If 1 is 100%. Then what number is 20% larger than 1?
Spolier: 1.2

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