Identify the maximum, minimum, and amplitude from the graph shown.

The maximum value of the function can be observed when x = pi. In this case the maximum value is y = 4.
 The minimum value of the function can be observed when x = 0 or when x = 2pi. In this case the minimum value is y = -4.
 The peak-to-peak amplitude of the function is A = 8.
 The zero-peak amplitude of the function is A = 4.

When i did the math i got 11 cm