## satellite73 3 years ago how about some geometry help here for a probability question

1. lgbasallote

i dont think we are sophisticated enough to help THE satellite73 :S

2. saifoo.khan

The Guru.

3. satellite73

|dw:1337741712065:dw| ratio of shaded region to total

4. inkyvoyd

|dw:1337741796032:dw|

5. inkyvoyd

are they parallel?

6. satellite73

7. inkyvoyd

impossible

8. satellite73

i believe the parallel line bisects the height

9. lgbasallote

well it's definitely not $$\frac{1}{4}$$ :/

10. inkyvoyd

|dw:1337741856986:dw| unless

11. satellite73

yeah like that

12. inkyvoyd

ok, then it is half of 1/3 times 2

13. inkyvoyd

1/3

14. inkyvoyd

small to big is 1:2; since it's perp bisector, that's another 1:2. since small to big is 1:2, we have big/total, or 2/3, and since that's cut in half, 1/3

15. satellite73

thank you!

16. inkyvoyd

ok, I hope I made sense.

17. lgbasallote

i just thought that it's half an area of trapezoid so the ratio might be $$\frac{b_1 + b_2}{2}$$ lol

18. inkyvoyd

that probably works too.

19. lgbasallote

oh wait...my ratio should be $$\frac{b_1 + b_2}{2b}$$ lol my ratio makes no sense