The length of the latus rectum of 25x^2 + 9y^2 - 150x - 90y + 225 = 0 is _______

1)18/5

2)16/15

3)225/25

4)15/16

The length of the latus rectum of 25x^2 - 36y^2 = 225 is _______

1)5/6

2)9/6

3)25/6

4)6/25

Multiple choice problems

IDK how to find the latus rectum, i think i was absent that day.

Anyone wanna help?=]