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Some young entrepreneurs started an indu...

Some young entrepreneurs started an industry "young achievers" for casting metal into various shapes . They put up and advertisement online stating the same and expecting order to cast metal for toys, sculptures , decorative pieces and more .
A group of friends wanted to make innovative toys and hence contacted the "young achievers" to order them to cast metal into solid half cylinders with a rectangular based semi-circular ends

Based on the above informtion , answer the following questions:
The total surface area S can be expressed in terms of V and r as :

A

`2pir+(2V(pi+2))/(pir)`

B

`2pir+(2V)/(pir)`

C

`pir^(2) + (2V(pi+2))/(pir)`

D

`2pir^(2)+(2V(pi+2))/(pir)`

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