Find th area of the circle. use 3.14 for π round to the nearest unit.
a) 1,017 cm2
b) 254 cm2
c) 57 cm2
d) 28 cm2

I think the answer is C because you would A=Pi x r x 2

22.

Period is the time it takes for one “cycle” to complete. in the parent sine function, period is 2*pi since sin(0) = 0, sin(pi/2) = 1, sin(pi) = 0, sin(3pi/2) = -1, and sin(2pi) = 0. at that point, the sequence repeats itself. i’m not sure if your graph is similar to the sine function since you didn’t provide a picture, but you can find the period by looking at a graph.