How to find weight of an object using volume

To find mass of an object using volume just by using below formula

P=m/V

Where
P is  density
m is mass of an object
V is volume of an object


For example

V = 7.76 cubic cm
P = 7.8 g/cubic cm

By rearranging the above formula  m= PV

So, the mass of an object is 60.55 g