Can someone please help me on number 39 and explain

In triangle opq right angled at p op=7cm,oq-pq=1 determine the values of sinq and cosq

If a || b and b | y, then ? a) x || y. b) x | a. c) a | y. d) a || y.

Circle a has a diameter of 7 inches, a circumference of 21.98 inches, and an area of 38.465 square inches. the diameter of circle b is 6 inches, the circumference is 18.84 inches, and the area is 28.26 square inches. part a: using the formula for circumference, solve for the value of pi for each circle. (4 points) part b: use the formula for area and solve for the value of pi for each circle. (4 points)