A student wishes to find the volume of a piece of wood of irregular shape. Her experiment requires

the use of a small brass object of mass 200 g.

ACalculate the volume of the brass object. The density of brass is 8.4 g/cm3

BTo find the volume of the piece of wood, the student has a measuring cylinder, a supply of

water and the brass object in (a). The piece of wood and the brass object are small enough

to be placed in the measuring cylinder.

(i) The piece of wood does not sink in water. Suggest why.

(ii) Describe what the student does to find the volume of the piece of wood, stating the

measurements that she makes and any calculations required.