Is the data set approximately periodic? If so, what are its period and amplitude? not periodic

periodic with a period of 4 and an amplitude of about 20

periodic with a period of 4 and an amplitude of about 30

periodic with a period of 5 and an amplitude of about 25

answer: the answer is 40.82

step-by-step explanation: 3.14 x 13(or half of 26) to the power of 2

the arc length is found by finding the circumference of the full circle (2xpixradius) and then dividing by 4 to find just one quarter of the circle (90 degrees).

answer:

c) the x-coordinate of the center of the circle increases by 3

but there’s no any figure there!