find the lenght of 11kg of copper wire of diameter 0.4cm,given 1cubic cm of copper has a mass of 8.4g.
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wieght = 11kg
=> Volume × 8.4 g/ 1000 = 11kg
=> Volume = 11×1000/ 8.4
=> volume = 1309.52
copper wire is in the form of a cylinder .
: v = 1309.52
pie × r×r×h = 1309.52
=> h = 1309.52 ×7×0.2×0.2/22
h = 16.666 cm
=> Volume × 8.4 g/ 1000 = 11kg
=> Volume = 11×1000/ 8.4
=> volume = 1309.52
copper wire is in the form of a cylinder .
: v = 1309.52
pie × r×r×h = 1309.52
=> h = 1309.52 ×7×0.2×0.2/22
h = 16.666 cm
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