Aptitude - Volume and Surface Area - Discussion
Discussion Forum : Volume and Surface Area - General Questions (Q.No. 3)
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
Explanation:
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. |
| 3 |
Video Explanation: https://youtu.be/V8EQ1YIaH74
Discussion:
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
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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