Given the following Probability Distribution, find it's variance. Round your variance number to two decimal places *
Х
0
1
P(x)
0.48
0.21
0.23
0.08
2.
3

Circle a has a diameter of 7 inches, a circumference of 21.98 inches, and an area of 38.465 square inches. the diameter of circle b is 6 inches, the circumference is 18.84 inches, and the area is 28.26 square inches. part a: using the formula for circumference, solve for the value of pi for each circle. (4 points) part b: use the formula for area and solve for the value of pi for each circle. (4 points)