which is the correct formula in finding the volume of a cylinder?

A.
[tex]v = pi \times r \: \times r \times \frac{h}{3} [/tex]
B.
[tex]v = pi \times r \times r \times h[/tex]
C.
[tex]v = \frac{4}{3} \: pi \: r \times r \times r[/tex]
D.
[tex]v = i \times w \times h[/tex]
pahelp uli:)
thanks uli

[tex] [/tex]

​