A hollow wooden pipe has a thickness of 1.5cm. it is 28 cm long and has an inner radius of 5.5 cm. find the volume of wood require to make the pipe, assuming that it is open at both ends.
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Step-by-step explanation:
SOLUTION
Inner radius=5.5㎝
Thickness=1.5㎝
Outer radius=5.5+1.5=7㎝
Volume of wood required=π(R
2
−r
2
)×h
=
7
22
(7
2
−(5.5)
2
)×28
=88(49−30.25)
=1650㎤
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