Question

A piece of iron has a volume of 25 cm cube mass 195 gram find the density of iron in gram per cm cube and kg per metre

Answer 1

Explanation:

Density = Mass/volume

= 195 gm/ 25cm³

= 7 4/5 or 39/5 g/cm³

25cm³. = 25³/100³ = (1/4)³m³ = 1/64m³

195g = 195 /1000 = 39/200kg

So, density = 39/200 / 1/64 kg/m³

= 39/200 * 64 = 312/25 = 12.5 kg/m³ (approx.)

Answer 2

Explanation:

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