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 cm³, is
Answers
Answered by
7
Step-by-step explanation:
thickness of pipe = 3cm-2cm = 1cm
volume = πr^2h
22÷7×1×1×70
220cm^3
Answered by
25
Step-by-step explanation:
given,
outer radius(R) = 3
inner radius (r) =2
height (h) = 70
volume of metal in the pipe =volume of outer cylinder - volume of inner cylinder
= (πR^2 h) - (πr^2 h)
= (π×3×3×70) - (π×2×2×70)
=630π-280π
=350π
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