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You mean CD is perpendicular to OM and EF to ON, right?

Yea dont know why i wrote parallel

Can you find MD?

No...

|dw:1377142738745:dw|

Its a right triangle? so can you you the Pythagorean theorem?

In the circle above, radius OP is perpendicular to chord AC.

Radius OP bisects chord AC, so AB = BC

|dw:1377142881604:dw|

Now look at your figure again.
Notice segment OM and chord CD.
What is the length of MD?

22?

\[\sqrt{884}\]

|dw:1377143069512:dw|

Correct, but you can simplify it.

Should I because it says just leave it in radical form...

I can simplify it myself i know how to do that part lol, but i just need help with the rest!

Ok.
Next. What is FN?

Would that be 22? Because they are perpendicular?

|dw:1377143292258:dw|

Oh wait no! i get it! dont tell me!!

\[\sqrt{523}\]

Correct. Great job!

Now EF?

Now EF is easy.

Its just double right?

Right, but the write it as a decimal rounded off to the nearest tenth.

Okay, I got it! Thanks!

Mind if i tag you for other questions?

45.7?

Not at all.

Thanks:)

wlcm