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1 answer:
Answer:
Step-by-step explanation:
The circumference of a circle's formula is pi*d (d being diameter).
If it only shows you the radius, then the formula would be 2*pi*r (r being radius), this is the same as pi*d.
2*r = d
Question 2
The circle has a diameter of 100m. Find circumference
pi*d
pi*100
314.16m in total
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We need to find mean of given integers.
We have -16,39,-10,-16,12,31.
In order to find mean, we need to add all the given inetgers.
Therefore, putting plus sign in between integers.
-16+ 39+ (-10)+(-16)+12+31 .
We will add all positive number 39+12+31 = 82
We will add all negative numbers by negative numbers, -16-10-16 = -42.
Therefore, -16+ 39+ (-10)+(-16)+12+31 = 82 - 42 = 40.
We have given total 6 integers.
So, in order to find the mean, we need to apply following formula
Mean =
We get,
Mean = 40/6 = 6.66666......
We can round it to 6.67.
Therefore, mean of the given integers = 6.67 (approximately) .