Please help in solving these questions so I can compare for my foundations of math 12 homework, thank you in advance!

13. The figure below shows a cross section of a parabolic reflector. The bulb is located at the focus. The opening at the focus is 10 cm. a. Find the equation ofthe parabola. b. What is the diameter of the opening at CD, 11 cm from the vertex? 2 marks 1 mark 14. The Apollo 11 spacecraft was placed in an elliptical orbit around the moon. The point in a lunar orbit nearest the surface of the moon is called the perilune, and the point farthest from the surface is called the apolune. The Apollo's orbit had a perilune altitude of 110 km and an apolune altitude of 314 km above the moon's surface. Find the equation of this ellipse if the radius of the moon is 1728 km and the centre of the moon is at one focus