If the outer radius of a hollow cylinder is R cm and inner radius is r сmand the height of the cylinder
is 1/π cm, the volume of the material used is to make this cylinder is ?
Answers
Answered by
0
Answer:
Volume of a hollow cylinder =πh(R
2
−r
2
)
=π×12(4
2
−2
2
)
=144π cm
3
Surface area of the hollow cylinder =2πrh+2πRh+2(πR
2
−πr
2
)
=2π×2×12+2π×4×12+2(π4
2
−π2
2
)
=2π(72+12)
=168π cm
2
Answered by
0
Answer:
Please elaborate your question to have correct answer.
Do you want to find area of the material uesd or the volume of the cylinder?
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