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What is the radius, in inches, of a right circular cylinder if its lateral surface area is 3.5 square inches and its volume is 5 cubic inches?

 Jul 23, 2022
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Lateral suface area  =  2 * pi * r * h

 

3.5 = 2*pi * r * h  →       solve for h

 

(3.5) / ( 2 * pi * r)   =  h

 

 

Volume =  pi * r^2  * h

 

5 =  pi * r^2 *  ( 3.5) / ( 2 *pi * r)

 

5 = 1.75 r

 

5 /1.75  =  r   =  20 / 7  in 

 

 

cool cool cool

 Jul 23, 2022

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