1
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Let's do this question, two cubes have volumes in the ratio, one is to 60 for the ratio of the area

2
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of a face of the first cube.

3
00:00:09,450 --> 00:00:12,330
To that of the other is what we have, two cubes.

4
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This is one cube.

5
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OK, now, over here I have one more cube.

6
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Now we need to find the ratio of this area to this area, pause the video, give it a try, and then

7
00:00:27,450 --> 00:00:28,470
let's do it together.

8
00:00:28,920 --> 00:00:29,770
All right, we're back.

9
00:00:29,790 --> 00:00:30,680
Let's do it together.

10
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Now, we know that volume is given by Side Cube, right?

11
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Therefore, if it is the site of the first cube and be the site of the second cube, we have a cube

12
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divided by cube is equal to one by sixty four.

13
00:00:43,920 --> 00:00:49,710
Right now, let's take the cube root on both the sides and we get a Bybee's equal to one by four.

14
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Right.

15
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All right.

16
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Now, over here, we need to find the ratio of A square by B Square.

17
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And you can note that even if the question was asking about the total surface area also, it would have

18
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been the same thing.

19
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That is, even if you take six square by six B square or if you take a square by B square, the answer

20
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will be the same.

21
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Right.

22
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All right.

23
00:01:13,080 --> 00:01:18,600
Now we know that Ebi B is equal to one by four, therefore A square by B Square, which is what we need

24
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to find will be equal to one by sixteen.

25
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Right.

26
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And that is your answer, which is option C over here.
