A pipe has the form of a hollow cylinder as shown in Figure 1.4. Find its mass
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A pipe has the form of a hollow cylinder as shown in Figure 1.4. Find its mass when
(a) Its length is 1.5 m, its external diameter is 205 mm, its internal diameter is 160mm and its density is 5500 kgm–3;
(b) Its length is l m, its external diameter is Dmm, its internal diameter is d mm and its density is ρ kgm–3. Notice here that the unassigned variables l, D, d, ρ are pure numbers and do not include units of measurement.
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