Question

3
The mass of an iron cube having
density 7.87 cm-3 is 787 g .
It volume expressed in scientific
most notation is​

Answer 1

Answer:

Denity is mass per unit volume..

Explanation:

787/7.87=100gm/cm3

Answer 2

a=0.018

mM=0.070 kg

a=0.018 mM=0.070 kg

Where a is the edge length of the cube and

M is the mass of the cube.

The volume of the cube is,

V=a3

Then,the density is,

ρ=MV=Ma3=0.0700.0183=1.2×104 kg/m3

ρ=MV=Ma3=0.0700.0183=1.2×104kgm3. hope this helps u please mark it as brainliest