Which of the following best defines amplitude?
distance between adjacent crests
low point of a wave
number of vibrations per second
one-half the height between the crest and the trough

In the diagram below what is the approximate length of the minor arc ab

Bugs bunny was 33 meters below ground, digging his way toward pismo beach, when he realized he wanted to be above ground. he turned and dug through the dirt diagonally for 80 meters until he was above ground

Math it's appreciated. (picture provided)