Academics – Mathematics : 2012/DEC/09
Question
Q9. (a) Fig Q9(a) represents the end view of 5 solid metal cylinders, each of which has a diameter of 500 mm, bound together by a tight belt.
Determine the total length of the belt. (10)
(b) Twenty identical hollow stainless steel spheres have a total mass of 4.79 kg.
Each sphere has an outside diameter of 50 mm.
Determine the thickness of each sphere. (6)
Note: the density of the stainless steel is 7500 kg/m3
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