Question

You have a rock with a volume of 35cm3 and a mass of 350 g. What is its density?
A 10 g/cm3
B 0.1 g/cm3
C 1125 g/cm3
D 350 g/cm3

Answer 1

Given:-

• Volume of rock ,V = 35cm³

• Mass ,m = 350g

To Find:-

• Density ,D

Solution:-

As we know that density is defined as the mass per unit volume .

• D = m/V

Substitute the value we get

→ D = 350/35

→ D = 10g/cm³

Therefore, the density of the rock is 10g/cm³.

Hence, Option (A) is the correct answer.

Additional Information!!!

• Mass per unit density is called volume.

Mathematical term

• V = m/D

• SI unit of volume is metre cube (m³) .

• SI unit of mass is kilogram (kg).

• SI unit of density is g/cm³ & kg/m³.

Answer 2

Given

• Volume = 35 cm³
• Mass = 350 g

We Find

Density of given

We Know

Formula used :-

$\boxed{\red{Density = Volume / Mass}}$

According to the question

${\red{Density = Volume / Mass}}$

${\red{Density = 350 / 35}}$

${\red{Density = \cancel\frac{350}{35}}}$

$\boxed {\red{Density = 10 g/cm³}}$

Hence, Density of given is 10 g/cm³ ( option A ).