Question

A
metal
pipe
has
a
bore
(
internal
diameter
)
of
5
cm
.
The
pipe
is
2
mm
thick
all
around
.
Find
the
weight
in
kg
,
of
1.4
m
of
pipe
,
it
being
given
that
1
cm
of
the
metal
weight 7.5 gms.​

Answer 1

Step-by-step explanation:

(volume of outer cylinder-volume of inner cylinder)/weight of 1cm

(πR^2h-πr^2h)/7.5 grams

((3.14x7x7x140)-(3.14x5x5x140))/7.5

(21540.4-10990)/7.5

10550.4/7.5

1406.72.

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