Find the total surface area (in cm2) of a cuboid having dimensions 5 cm, 7 cm and 11cm.
Show answer & explanation
Correct answer: B
Explanation
The correct answer is Option 2 i.e. 334.
Dimensions of cuboid = 5 cm × 7 cm × 11 cm
Total surface area of cuboid = 2(lb + bh + hl)
here. l = length, b = breadth, and h = height
Now, according to the question
Total surface area of cuboid = 2(5 × 7 + 7 × 11 + 11 × 5)
⇒ 2(35+ 77 + 55)
⇒ 2 × 167
⇒ 334 cm2