How to find the volume of a coin.?
A Coin dealer offers to sell you an ancient gold coin that is 2.2 cm in diameter and 3.0 mm in thickness. The density of gold is 19.3g/cm^3. How much should the coin weigh if it is pure gold?
I believe I would start my conversion with 19.3g/cm^3 but wouldn’t I have to calculate the volume. [...]