The meaning of circumference is to find the distance around a circle or in other words the perimeter of the circle. The circumference of a circle can be calculate by using the formula
C=2πr or
C=πd, where r refers to the radius.
In this exercise is given a circle, which radius is 1 yard and it is asked to find its circumference and use 3.14 as the value of pi. In order to do that, you should substitute the given value of the radius and pi into the formula C=2πr.
The circumference of the circle is 6.28 yards.
For this problem, you would use the slope formula, or m=(y2-y1)/(x2-x1). So, let's put in what we know.
The x's and y's correspond with our coordinates. So let's plug that in:
m=(6-0)/(2-0)
m=(6)/(2)
m=3
So, the slope of your line is 3.
Here 4 is called the antecedent, and 12 is called the consequent. The first term is always called the antecedent and the second term is always called the consequent.
<span> Your ratio can be reduced, just like a fraction. Here, 4 and 12 share the common factor of 4. So we can divide both numbers by 4 to get a ratio that means exactly the same thing as 4:12. This ratio will be 1:3.</span><span> In other words, 1:3 is the same as your ratio 4:12.</span><span> Ratios sometimes mean how each number relates to some whole amount. For example, your ratio is 4:12. Since, 4 + 12 = 16, 16 is your whole amount. So, 4 is one part of 16, and 12 is the other part of 16.</span><span> So your ratio means 4/16 forms one part, and 12/16 forms the other part. This is what is meant by "ratios compare the size of one number to another number." The size of these two parts is what a ratio compares.</span><span> Notice that 4/16 = 0.25 (25%), and 12/16 = 0.75 (75%) (these are the two parts), and 0.25 + 0.75 = 1 (they add to be 1 whole).</span><span> This can also be stated in terms of percentages, like 25% + 75% = 100%.</span>
Edited 2018-03-09 07:49
Given unit circle, so radius=1.
We calculate lengths of vertical segments, with the help of Pythagoras Theorem, based on a right triangle radiating from circle centre O, and hypotenuse from O to a point on the circumference.
AO=1 (given unit circle)
BB'=sqrt(1^2-0.25^2)=0.968246
CC'=sqrt(1^2-0.5^2)=0.866025
DD'=sqrt(1^2-0.75^2)=0.661438
EE'=0
Now we proceed to calculate the segments approximating the arc. Again, we use a right triangle in which the hypotenuse is the segment joining two points on the circumference. The height is the difference between the two vertical segments, and the base is 0.25 for all four segments.
AB=sqrt((AO-BB)^2+0.25^2)=0.252009BC=sqrt((BB-CC)^2+0.25^2)=0.270091CD=sqrt((CC-DD)^2+0.25^2)=0.323042DE=sqrt((DD-0)^2+0.25^2)=0.7071068
giving a total estimation of the arc length
approximation of arc=AB+BC+CD+DE=1.55225
234.375 or about 234.
Half it several times to get the answer.
15000/2=7500 (1 hour ago)
7500/2= 3750 (2 hours ago)
3750/2= 1875 (3 hours ago)
1875/2=937.5 (4 hours ago)
937.5/2= 468.75 (5 hours ago)
468.75/2= 234.375 (6 hours ago)
Therefore, there were 234.375 or about 234 bacteria 6 hours ago.