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
cm", is
(A) 350 T
(Β) 630 π
16) 280
π
(D) 910
Answers
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1
Answer:
A) 350π
Step-by-step explanation:
inner dimensions
r= 2 cm
h= 70 cm
inner volume= π r^2 h
= π 2^2×70
= 280π
outer dimension
R=3 cm
h= 70 cm
outer volume= π R^2 h
= π 3^2×70
= 630π
volume of metal = outer volume - inner volume
630π-280π
350π
answer A) 350π
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