a block measures 3.5 cm long 2.8 cm wide and 1.6 cm deep. the density of the block 2.5 g/cm. calculate the volume of the block.
Volume of a block can be found by: length × width × height. So:
3.5cm × 2.8cm × 1.6cm = 15.68cm^3
The volume is
(length) x (width) x (height)
= (3.5 cm) x (2.8 cm) x (1.6 cm)
= 15.68 cubic cm.
Notice that you don't need the density to calculate the volume.