Discussion of Question with ID = 100 under Volume-and-Surface-Areas

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Question

An iron tank 2 m × 3 m is filled with water upto a height of 2 m. What surface area of the tank is at a higher risk of corrosion?

A

26 cu. m.

B

28 cu. m.

C

24 cu. m.

D

30 cu. m.

Soln.
Ans: a

If L, B and H are the dimensions of the water column, then the wet area is 2(BH + LH) + LB = 2 × (3 × 2 + 2 × 2) + 2 × 3. The result is 26 cu. m.


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