Question 1165488
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The area of the curved surface of a right circular cylinder varies jointly
as its radius and altitude. 
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r, radius
L, "altitude"
A, surface area curved surface
k, variation constant


{{{A=krL}}}



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If the area of such a surface whose radius is 12cm and whose altitude is 10cm is 240𝜋 cm^2
, what is the ar....
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{{{240*pi=12*10*k}}}

{{{k=(240pi)/(12*10)}}}

{{{k=(24pi)/120}}}

{{{highlight_green(k=0.2pi)}}}



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what is the area of a similar
surface whose radius is 8 cm and whose radius is 9 cm^2?
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You should be able to do the question part.