## Answers

### This Is a Certified Answer

there is probably a mistake in teh given number for weight
in paraffin liquid. It is 40.3 gf rather than 49.3 gf

Relative density of iron = weight in air / (weight in air - weight
in water)

= 44.5 gf / (44.5 - 39.5) gf =
8.9

density of iron = 8.9 * 1000 kg /cubic meter = 8900 kg/ cub meter

relative density of paraffin

= (weight of iron piece in air - weight in paraffin) / (weight in
air - weight in water)

= (44.5 - 40.3 ) / ( 44.5 - 39.5)

= 4.2 / 5 = 0.84

density of paraffin liquid = 840 kg/cubic meter