Question

A piece of volume 40cm3 whose density is 6.8g/cm3. find . the mass of iron​

Answer 1

Answer:

Hence, mass of iron = 272 g

Explanation:

Given,

Volume of iron piece = 40 cm^3

Density of iron = 6.8 g/cm^3

Let the mass of iron piece be 'm'. Then,

We know that,

Density = Mass / Volume = m/V

By applying values, we get,

=> 6.8 g/cm^3 = m / 40 cm^3

=> m = 6.8 × 40

=> m = 272 g

Hence, mass of iron = 272 g

'A piece of Supplementary Counsel' :-

• Density = The density, of a substance is its mass per unit volume. The symbol most often used for density is ρ, although the Latin letter D can also be used. Mathematically, density is defined as mass divided by volume: where ρ is the density, m is the mass, and V is the volume.

• Calculation of Density = Density is the mass of an object divided by its volume. Density often has units of grams per cubic centimeter (g/cm3). Remember, grams is a mass and cubic centimeters is a volume (the same volume as 1 milliliter).

Answer 2

Given :-

• Volume of Iron piece  = 40 cm³

• Density of Iron piece = 6.8 g/cm³

To find :-

• mass of iron , m = ?

Formula used :-

• Density = mass / volume

Solution :-

Using formula

Density = mass / volume

mass = density × volume

→ mass , m = 6.8 × 40

→ mass , m = 272 g

Hence, Mass of iron piece is 272 grams .

___________________

⇢ Density is defined as the mass per unit volume.

⇢ SI unit of density is kg / m³

⇢ Density is a scalar quantity having only magnitude and no direction.