Pls help with math I realy need help

Answer:
803.84
Step-by-step explanation:
because its pi x r² x height
in this case the radius is 4 because the diameter is 8 and half would be 4 so its 4² which is 16 and the height is 16 and you mulitply pi which is 3.14 so 16 x 16 x 3.14= 803.84cm
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