00:01
So for this question, we're looking at significant figures.
00:03
And so for the first question, we're asked how many significant decimal places does the numerator have? so we're talking about decimal places.
00:13
We're talking about the numbers just to the right of the decimal.
00:16
So if we look, this first one has two significant figures to the right of the decimal.
00:21
And the second number also has two significant figures to the right of the decimal.
00:27
And so the numerator, after you subtract them should have two significant decimal places.
00:38
And how many significant figures does the completed, would the completed subtraction have? so if you do 14 .27 minus 12 .33, right, you'll get an answer of 1 .94.
00:56
We need two significant figures in the decimal places, which we have.
01:01
And so then we have a total, if this is going to be our answer of 1 .94, it has a total of three significant figures.
01:18
Next, how many significant figures should the denominator have? so the denominator, we are doing multiplication.
01:29
And so we can do multiplication.
01:32
However many significant figures, the smallest number significant figures when you're multiplying is how many the final will have.
01:41
So this first one has four significant figures and the second one has two significant figures.
01:47
So the smallest one is two.
01:49
So the product should have two significant figures.
02:00
And then what are the units of the denominator? so we're doing multiplication.
02:03
So we're taking right centimeters times centimeters squared, which is going to equal centimeters cubed.
02:13
So our units are going to be centimeters cubed.
02:20
And then we're asked to calculate the denominator, but not round...