Answer and Worked Solutions for Edexcel GCSE Mathematics November 2017 ... 3. A gold bar has a mass of 12.5 kg. The density of gold is 19.3 g/cm3. Work out the ... Give your answer correct to 3 significant figures 4. ... 4 of these rectangles are used to make this 8-sided shape. ... Work out the area of the 8-sided shape.
Explanation: