engineers at a car company plan to reduce the circumference of wheel rims to make cars lighter. the goal is to reduce the circumference fro. 59.66 inches to 56.52 inches. the lighter wheel rims will have an approximate diameter of

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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.