Aptitude - Volume and Surface Area - Discussion
Discussion Forum : Volume and Surface Area - General Questions (Q.No. 12)
12.
A cistern of capacity 8000 litres measures externally 3.3 m by 2.6 m by 1.1 m and its walls are 5 cm thick. The thickness of the bottom is:
Answer: Option
Explanation:
Let the thickness of the bottom be x cm.
Then, [(330 - 10) x (260 - 10) x (110 - x)] = 8000 x 1000
320 x 250 x (110 - x) = 8000 x 1000
| (110 - x) = |
8000 x 1000 | = 100 |
| 320 x 250 |
x = 10 cm = 1 dm.
Discussion:
49 comments Page 3 of 5.
Mayawati Chotala said:
10 years ago
Still can't understand why 10? Which both sides are you talking about?
Twinkle Nagar said:
9 years ago
Our answer is 10 cm.
Then what is 1dm? Please, anybody tell me.
Then what is 1dm? Please, anybody tell me.
Prasant said:
1 decade ago
Ans to Rahul: 1 ltr = 1000 cc
Hence, 8000 ltr = 8000X1000 cc
Hence, 8000 ltr = 8000X1000 cc
Ramya said:
8 years ago
10^-2 is equal to cm same as 10^-1 is equal to decimeter.
Ramesh said:
9 years ago
Nothing I understand, please anyone explain in easy way.
Deepa said:
1 decade ago
Please tell me why you subtracted by 10 in first step.
Ali said:
3 years ago
Why we should take 3.3 as length? Please explain me.
Abhilasha said:
9 years ago
I am not getting this, Please explain this solution.
Manoj Kumar said:
9 years ago
@Pramod & @Narinder.
Well and correctly said.
Well and correctly said.
Mahesh said:
1 decade ago
Why we are subtracting 10? Please tell any one.
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers