Can someone answer this question for me ?

What are correct trigonometric ratios that could be used to determine the length of ln

Which of the following equations is of the parabola whose vertex is at (2, 3), axis of symmetry parallel to the y-axis and p = 4? a.)y-3 = 1/16 (x-2)^2 b.)y+3 = -1/16 (x+2)^2 c.)x-2 = 1/16 (y-3)^2

What is the radius of a circle with an area of 78.5 cubic inches? use 3.14 for pie