What is the formula for the total surface area of a cuboid?

see full answer

Talk to JEE/NEET 2025 Toppers - Learn What Actually Works!

Real Strategies. Real People. Real Success Stories - Just 1 call away

An Intiative by Sri Chaitanya

2 (lb + bh + hl)

(l \times b \times h)

(l \times b)

None of these

answer is A.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

Here, we have to find the formula for the total surface area of a cuboid.
Consider the cuboid:
Question Image

Assume the length, breadth and height of the cuboid be

l, b

and

h

respectively.
A cuboid's total surface area (TSA) is the sum of the areas of its six rectangular sides.
So, the TSA of cuboid

= l \times b + b \times h + h \times l + l \times b + b \times h + h \times l

\Rightarrow TSA = 2 (lb + bh + hl)

Therefore, the total surface area of a cuboid is

2 (lb + bh + hl)

.
Hence option (1) is correct.

Watch 3-min video & get full concept clarity

JEE

NEET

Foundation JEE

Foundation NEET

CBSE