Find the perimeter of a circle whose diameter is 12.6 cm please help and show working

An energy plant is looking into putting in a system to remove harmful pollutants from its emissions going into earth's atmosphere. the cost of removing the pollutants can be modeled using the function c = 25000p/100 -p what is the vertical asymptote?

Given ab and cb are tangents of p, and m =10°. what is the measure of abp?

Will mark name all segments skew to bc