Question

The length, breath, and height of a brick are 40 cm,10 cm, and 9 cm respectively. What is the surface area of the brick?

• A. 1600 cm2
• B. 1650 cm2
• C. 1700 cm2
• D. 1750 cm2

Answer 1

Answer: (C)

1700 cm2

Answer 2

For calculating the surface area of a brick , We can use this formula:

$\text{Surface Area} = 2(lb + bh + hl)$
And we have given in Question:

• $l$ = 40 cm
• $b$= 10 cm
  - $h$ = 9 cm

Putting these values into the formula:

$\text{Surface Area} = 2(40 \times 10 + 10 \times 9 + 9 \times 40)$

⇒ $2\times(400 + 90 + 360) = 1700$

So, the Surface area of brick =1700 cm2.
Therefore, The correct option is (C).