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

The Correct Option is C

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).