SOLUTION: The area of the curved surface of a right circular cylinder varies jointly as its radius and altitude. If the area of such a surface whose radius is 12cm and whose altitude is 10c

Algebra ->  Surface-area -> SOLUTION: The area of the curved surface of a right circular cylinder varies jointly as its radius and altitude. If the area of such a surface whose radius is 12cm and whose altitude is 10c      Log On


   

Question 1165488: The area of the curved surface of a right circular cylinder varies jointly
as its radius and altitude. If the area of such a surface whose radius is 12cm and whose altitude is 10cm is 240𝜋 cm^2
, what is the area of a similar
surface whose radius is 8 cm and whose radius is 9 cm^2
Answer by josgarithmetic(39838) About Me  (Show Source):
You can put this solution on YOUR website!
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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%2Api=12%2A10%2Ak
k=%28240pi%29%2F%2812%2A10%29
k=%2824pi%29%2F120
highlight_green%28k=0.2pi%29


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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.