The total surface area of a cuboid is 4200 cm. If the length and breadth of the cuboid are 15 cm and 16 cm, then find the height of the cuboid.
Show answer & explanation
Correct answer: C
Explanation
The correct answer is Option 3 i.e. 60.
T.S.A of cuboid = 2(lb + bh + hl)
here l = length, b = breadth, and h = height
⇒ 4200 = 2(15 × 16 + 16 × h + h × 15)
⇒ 4200 = 2(240 + 16h + 15h)
⇒ 4200 = 480 + 32h + 30h
⇒ 3720 = 62h
⇒ h = 60