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Please help. Completely Confused!

Thanks

 Apr 19, 2018
 #1
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+1

A  = 2*pi*r^2 + 2*pi*r*h     factor out  "pi'

 

A = pi  [ 2r^2  + 2rh ]      divide both sides by   [ 2r^2 + 2 rh ]

 

A  /  [ 2r^2 + 2rh ]  =  pi

 

 

cool cool cool

 Apr 19, 2018

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