alleryA hollow pipe has outer radius 8 cm, inner radius 7 cm and length 14 cm. Find its material volume (pi = 22/7).
A1320 cm³
B330 cm³
C660 cm³
D2156 cm³
Answer & Solution
Correct answer: C. 660 cm³
Volume is pi (64 - 49) x 14 = (22/7)(15)(14) = 660 cubic centimetres.
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