Brainliest if you provide a valid answer and an explanation Please don't steal my points, I really need help with this :(

Q: What is the length of segment PC?
Q2: What is the length of the diameter?

(a) calculate the molarity of a solution that contains 0.0345 mol nh4cl in 400 ml of solution. (b) how many moles of hno3 are present in 35.0 ml of a 2.20 m solution of nitric acid? (c) how many milliliters of 1.50 m koh solution are needed to supply 0.125 mil of koh ?

Indicate the formula for the following conditions: p^c(n,r)=

Varies inversely with x. if y=8.5 when x=-1 find x when y=-1