The diameter of a gigantic Ferris wheel is 215 meters. If a woman rides the Ferris wheel for one revolution, find how far she travels. Give an exact answer and an approximation using 3.14 for 1. The woman travels exactly 1350.21 (Type an exact answer in terms of t.)

Thompson and thompson is a steel bolts manufacturing company. their current steel bolts have a mean diameter of 127 millimeters, and a variance of 36. if a random sample of 35 steel bolts is selected, what is the probability that the sample mean would differ from the population mean by greater than 0.5 millimeters? round your answer to four decimal places.

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Square a has a side length of (2x-7) and square b has a side length of (-4x+18). how much bigger is the perimeter of square b than square a?and show all work! you so