To find the mass, weigh it using abalance, measuring in kg.
To find the volume, you must fill an eurekacan up to its spout with water and place an emptymeasuringcylinder beneath the spout.
Then, gently drop the object into the water, making sure no water is spilt from the top.
Some of the water will be poured into the cylinder through the spout. This is the object's volume. Measure the water in mcubed.
To find the density, divide the massbyitsvolume.
To find a regular object's density, simply weigh it using abalance in kg and then using a ruler measure it's length, width and height and multiply them together. Remember to convert to mcubed. To find it's density divideitsmassbyitsvolume.