Aptitude - Volume and Surface Area - Discussion
Discussion Forum : Volume and Surface Area - Data Sufficiency 1 (Q.No. 2)
Directions to Solve
Each of the questions given below consists of a statement and / or a question and two statements numbered I and II given below it. You have to decide whether the data provided in the statement(s) is / are sufficient to answer the given question. Read the both statements and
- Give answer (A) if the data in Statement I alone are sufficient to answer the question, while the data in Statement II alone are not sufficient to answer the question.
- Give answer (B) if the data in Statement II alone are sufficient to answer the question, while the data in Statement I alone are not sufficient to answer the question.
- Give answer (C) if the data either in Statement I or in Statement II alone are sufficient to answer the question.
- Give answer (D) if the data even in both Statements I and II together are not sufficient to answer the question.
- Give answer(E) if the data in both Statements I and II together are necessary to answer the question.
2.
Is a given rectangular block, a cube? | |
I. | At least 2 faces of the rectangular block are squares. |
II. | The volume of the block is 64. |
Answer: Option
Explanation:
I gives, any two of l, b, h are equal.
II gives, lbh = 64.
From I and II, the values of l, b, h may be (1 ,1 , 64), (2 ,2 ,16), (4, 4, 4).
Thus, the block may be a cube or cuboid.
Correct answer is (D).
Discussion:
9 comments Page 1 of 1.
Dark knight said:
4 years ago
As per you @Gaurav.
The correct answer is E.
If l = 4 and b = 4 which intern makes the h = 4 as 4*4*4 = 64.
The correct answer is E.
If l = 4 and b = 4 which intern makes the h = 4 as 4*4*4 = 64.
Dark knight said:
4 years ago
As per you @Gaurav.
The correct answer is E.
If l = 4 and b = 4 which intern makes the h = 4 as 4*4*4 = 64.
The correct answer is E.
If l = 4 and b = 4 which intern makes the h = 4 as 4*4*4 = 64.
Gaurav said:
7 years ago
Explanation for (I) :.
Given that two sides of a block are square, it is not mentioned that they are adjacent always. They can also be opposite sides. So two opposite square sides doesn't make a block cube!
Given that two sides of a block are square, it is not mentioned that they are adjacent always. They can also be opposite sides. So two opposite square sides doesn't make a block cube!
Ramesh said:
9 years ago
Option A should be the correct answer.
Heisenberg said:
9 years ago
Shouldn't A be the right answer?
According to A two sides are square. Which implies h, l, b all the three are of same sides.
According to A two sides are square. Which implies h, l, b all the three are of same sides.
ARNB said:
10 years ago
It is not two sides, it is two faces which are cube, hence all three dimensions have to be same. Hence 1 is sufficient to say that the geometry is cube.
Chinmay said:
1 decade ago
Also the sides of the cube should not be assumed to be integral. If it is so then it should be explicitly mentioned in question.
Chandu said:
1 decade ago
From first option it is clear that l, b, h are equal. So definitely it should be a cube according to me.
The values of l, b, h may be (1, 1, 64), (2, 2, 16), (4, 4, 4).
But l=b=h....from I option. So only (4, 4, 4) is answer.
So I is alone to answer.
The values of l, b, h may be (1, 1, 64), (2, 2, 16), (4, 4, 4).
But l=b=h....from I option. So only (4, 4, 4) is answer.
So I is alone to answer.
Amit said:
1 decade ago
It is given to find whether the given is rectangle or cubical block, we know cube has volume but rectangular doesn't so from the second option only, we get to know that it cannot be rectangle (as it has no volume) but cube does. So according to me II alone sufficient to answer.
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