The diagram below shows part of the rock cycle. thats the pic which type of rock does b represent? igneous rock metamorphic rock rock formed by compaction rock formed by heat and pressure

A4.86 g piece of metal was placed in a graduated cylinder containing 15.5 ml of water. the water level rose to 17.3 ml. what is the density of the metal. i need the steps of how to solve it to so i can use a formula to work out other problems.