A metal pipe has a bore of 5 cm. The pipe is 2mm thick all around. Find the
volume of a 2m long pipe if 1 cm2 of the metal has a mass of 7.7g
Answers
Answered by
0
Answer:
Inner diameter=5 cm. radius=2.5cm
thickness =5mm=0.5cm
outer radius=2.5+0.5=3cm
length=2m=200cm
volume of pipe=
V=Π(R
2
−r
2
)h
V=3.14(3
2
−2.5
2
)∗200
V=22/7∗(9−6.25)∗200
V=12100/7cm
3
1 cm
3
of the metal weighs 7.7 g.
So,
7
12100
cm
3
weighs=7.7∗
7
12100
gm=13310gm=13.31kg
Explanation:
follow me
like my answer
Similar questions