We know that the area of a circle has the formula A=πr²
We are given the diameter, and as we know that the diameter is twice the radius, we can divide the given diameter by 2.
27 ÷ 2= 13.5
Now, plug-in the number into the formula.
A=πr²
A=π×13.5²
A=π×182.25
(Assume π=3.14)
A=3.14 × 182.25
A=572.265
A=572.3 square meters.
Therefore, the area of the circle is 572.3 square meters.
Answer:
Negative
Step-by-step explanation:
It would be a negative number because a postive number multiplied by a negative number always equals a negative number
Answer:
Five hundred point two
Step-by-step explanation:
500.2
That's a deimal.
The digit 5 is an hundred. Hence, we have
Five hundred point two
Answer:
[0.9 months, 32.69 months]
Step-by-step explanation:
The mean is
The standard deviation is
Now, we have to find two values a and b such that the area under the Normal curve with mean 16.8 and standard deviation 8.1092 between a and b equals <em>95% = 0.95
</em>
Using a spreadsheet we find these values are
a = 0.906
b = 32.694
<h3>(See picture)
</h3>
and our 95% confidence interval for the mean number of months elapsed since the last visit to a dentist for the population of students participating in the program rounded to two decimal places is
[0.9 months, 32.69 months]
Answer:
here
Step-by-step explanation:
here
u can see in pictures