Question

Find the density of an object of mass 90kg having length 5m breadth 2m hight 3m

Answer 1

GIVEN:

• Mass of an object = 90 kg
• Length = 5 m
• Breadth = 2 m
• Height = 3 m

TO FIND:

• What is the density of the object ?

SOLUTION:

Let the Density of the object be 'D' kg/m³

✏ Firstly, we have to find the volume of the object

We know that the formula for finding the volume of an object is:-

$\large{\boxed{\bf{\star \: Volume = L \times B \times H \: \star}}}$

According to question:-

On putting the given values in the formula, we get

$\rm{\hookrightarrow Volume = 5 \times 2 \times 3 }$

$\bf{\checkmark Volume = 30 \: m^3 }$

Now,

We have to find the Density of an object

We know that the formula for finding the Density of an object is:-

$\large{\boxed{\bf{\star \: Density = \dfrac{Mass}{Volume} \: \star}}}$

According to question:-

On putting the given values in the formula, we get

$\rm{\hookrightarrow D = \cancel\dfrac{90}{30} }$

$\bf{\checkmark D = 3 \: kg/m^3 }$

• Density = D = 3 kg/m³

❝ Hence, the Density of an object is 3 kg/m³ ❞

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