Question

A metallic cylindrical pipe has outer
radius of 3 cm and an inner radius of
2 cm. If the length of the pipe is 70 cm,
then the volume of metal in the pipe, in
cm3, is
(A) 350 π
(Β) 630 π
(C) 280 π
(D) 910 π​

Answer 1

d.) 910

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