HELP The question its on the pic 69 points on the people who gets it right

Options for b=
2*pi, pi, r, 2*pi*r, pi*r

Options for h=
Pi, r*r, 2*pi, r, 2r

Quick translate "x is 12 units from 20" into an equation. what are the values of x being described? if you can answer any of my other questions that'd be great too

Aproduction manager test 10 toothbrushes and finds that their mean lifetime is 450 hours. she then design sales package of this type of toothbrush. it states that the customers can expect the toothbrush to last approximately 460 hours. this is an example of what phase of inferential statistics

Pyramid shown has a square base that is 18 inches on each side has a surface area of 164 square inches what is the slant height