Which statement is true about the circumference of a circle? 15
O The circumference is the measurement around the circle.
O The circumference is the measurement of the radius.
O The circumference is the measurement of the diameter
The circumference is double the radius

Which describes the difference between the graph of f(x)=x^2 and g(x)=-(x^2-2)

Pls brainliest will be awarded if answer is correct

Assume that there is a 11% rate of disk drive failure in a year. a. if all your computer data is stored on a hard disk drive with a copy stored on a second hard disk drive, what is the probability that during a year, you can avoid catastrophe with at least one working drive? b. if copies of all your computer data are stored on four independent hard disk drives, what is the probability that during a year, you can avoid catastrophe with at least one working drive?