The circumference of a circle is pi x diameter. Therefore, we can use this in reverse order as well.
I’ll be using 3.14 as pi, but if you need a more exact answer you can always use the pi function on a calculator.
37.68/3.14 = 12
Therefore, the diameter must be 12.
Since the radius is half the diameter, we can divide by 2 to find the radius.
12/2 = 6
Therefore, the radius of our circle is 6.
The area of a circle is equal to pi x radius squared.
Since we know our radius, we can solve.
Using PEMDAS, we know to use exponents first, so 6 squared is equal to 36.
From there, we can multiply.
36 x 3.14 = 113.04
And there we have your answer! 113.04 is the area of the circle.
Hope this helped :)
All you do is 104 times 50 and then you get your anwser
This is an isosceles triangle, so both legs are of length 5√2.
Use the Pyth. Thm. to find the length of the hypotenuse. Square 5√2 and double the result: 25(2) = 50; twice 50 is 100. The square of the length of the hyp. is 100, and so the length of the hyp is sqrt(100), or 10 (answer).
Answer: just use a calculator ._.
Step-by-step explanation:
Answer:
The new mean is 5.
The new standard deviation is also 2.
Step-by-step explanation:
Let the sample space of hours be as follows, S = {x₁, x₂, x₃...xₙ}
The mean of this sample is 4. That is,
The standard deviation of this sample is 2. That is, 
.
Now it is stated that each of the sample values was increased by 1 hour.
The new sample is: S = {x₁ + 1, x₂ + 1, x₃ + 1...xₙ + 1}
Compute the mean of this sample as follows:
The new mean is 5.
Compute the standard deviation of this sample as follows:
The new standard deviation is also 2.
