Question

Length, breadth and height of a brick are 20 cm, 10 cm and 5 cm respectively. The density of the material of the brick is 1500 kg m¹. Calculate a.volume of the brick b. mass of half of the brick.​

Answer 1

Required Answer :

• The volume of the bricks = 1000 cm³ or 0.001 m³
• The mass of the bricks = 1.5 kg

Given :

• Length of the bricks = 20 cm
• Breadth of the bricks = 10 cm
• Height of the bricks = 5 cm
• Density of the bricks = 1500 kg/m³

To find :

• Volume of the bricks
• Mass of the bricks

Solution :

Calculating the volume of the bricks :

Volume of any object is the space occupied by it. It's S.I. unit is m³.

Formula to calculate volume of an object :

• Volume = l × b × h

where,

• l denotes the length
• b denotes the breadth
• h denotes the height

Substituting the given values :

⇒ Volume of the bricks = 20 × 10 × 5

⇒ Volume of the bricks = 1000

Therefore, the volume of the bricks = 1000 cm³

Now, we will convert the volume of the bricks from cm³ into m³.

As we know,

• 1 cm³ = 1/100³ m³

So, divide the value by (100)³ to convert it from cm³ into m³.

⇒ Volume = 1000/1000000

⇒ Volume = 0.001

Therefore, the volume of the bricks = 0.001 m³ or 1000 cm³

Calculating the mass of the bricks :

Mass is the matter contained in the body. It's S.I. unit is kg.

Formula to calculate the mass :

From,

• Density = Mass/Volume

we get,

• Mass = Density × Volume

Substituting the given values :

⇒ Mass = 1500 × 0.001

⇒ Mass = 1500 × 1/1000

⇒ Mass = 15 × 1/10

⇒ Mass = 1.5

Therefore, the mass of the bricks = 1.5 kg

Answer 2

Answer:

1500 g

Explanation:

VOLUME OF BRICK = 20×10×5

= 1000 CM³

DENSITY = 1500 KG/M³ = 1.5 G/CM³

MASS = D × V = 1.5 × 1000 = 1500 g