Medal

Calculate the approximate weight of the gold Olympics medal, if its diameter is 8 cm and a thickness 6 mm. The density of gold find out in the tables or on the Internet.

Correct result:

m =  582.07 g

Solution:

$$\begin{gathered} \rho =19.30g\cdot c{m}^{\text{−}3} \\ m=V\rho =\pi r^{2}h\rho =\pi \cdot (8\mathrm{/}2{)}^2\cdot (6\mathrm{/}10)\cdot 19.3=582.07\text{ g} \end{gathered}$$

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