Aptitude - Volume and Surface Area - Discussion

Discussion Forum : Volume and Surface Area - General Questions (Q.No. 3)
A hall is 15 m long and 12 m broad. If the sum of the areas of the floor and the ceiling is equal to the sum of the areas of four walls, the volume of the hall is:
Answer: Option

2(15 + 12) x h = 2(15 x 12)

h = 180 m = 20 m.
27 3

Volume = 15 x 12 x 20 m3 = 1200 m3.

Video Explanation: https://youtu.be/V8EQ1YIaH74

74 comments Page 8 of 8.

Yuri said:   1 decade ago
@ akansha ceiling means top wall, and hence its area is always equal to floor.

Akanksha said:   1 decade ago
What is ceiling?

Shahid said:   1 decade ago
Here given that

Area of four walls = (area of the base )+(area of ceiling)

As per Surface area of a cuboid we have 2(l+b)*h
Area of base is (l*b)

So from these 2 formula e we get the equation explained in the answer section

Gopal said:   1 decade ago
I can not understand the meaning of cube in answer.

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