We have been given that a circle of a certain radius has an area which is numerically 5 times the value of the circumference. We are asked to find the radius of the circle.
We know that area of circle with a radius of r units is
.
We know that circumference of a circle is
.
5 times the value of circumference would be
.
Now we will equate 5 times circumference with area as:

Let us solve for r.



Therefore, the radius of the circle would be 10 units.
Answer:
The answer to number 1 is c the answer to number 2 is c
Step-by-step explanation:
Let X be a random variable representing the weight of a pack of cookies.
P(X < 250) = P(z < (250 - 255)/2.5) = P(z < -5/2.5) = P(z < -2) = 1 - P(z < 2) = 1 - 0.97725 = 0.02275 = 2.3%
Therefore, we conclude that about 2.3% of the packs weighed less than 250 grams.