Give exact answer in terms of π where appropriate. The area of the circle A.

a) Find the radius of circle A
b) Find the length of arc BC.
c) Find the area of the shaded sector ​

∆red ≅ ∆ by rule will give brainiest if possible

Lines a and b are parallel. what is the value of x? -5 -10 -35 -55

The management of a supermarket wants to adopt a new promotional policy of giving a free gift to every customer who spends more than a certain amount per visit at this supermarket. the expectation of the management is that after this promotional policy is advertised, the expenditures for all customers at this supermarket will be normally distributed with a mean of $95 and a standard deviation of $20. if the management wants to give free gifts to at most 10% of the customers, what should the amount be above which a customer would receive a free gift?