in circle O, CD=44,OM=20,ON=19.CD is perpendicular to OM, EF is perpendicular to ON. (figure not drawn to scale.
a)what is the radius? if the answer is not an integer, express in radical form.
b)find FN. if your answer is not an integer, express in radical form
c)find EF. express it as a decimal rounded to the nearest tenth.

Question

in circle O, CD=44,OM=20,ON=19.CD is perpendicular to OM, EF is perpendicular to ON. (figure not drawn to scale.
a)what is the radius? if the answer is not an integer, express in radical form.
b)find FN. if your answer is not an integer, express in radical form
c)find EF. express it as a decimal rounded to the nearest tenth.

highschoolmom2010 · Answer

attachment

phi · Answer

this looks familiar

highschoolmom2010 · Answer

i did it before but my teacher told me i did it wrong :/
it is #12

phi · Answer

you could simplify sqr(884) to 2 sqr(221)

phi · Answer

although I think you confused 884 with 848?

phi · Answer

and you then used sqr(848) in part (b).  So you did it correctly, except your calculator keeps switching  884  into 848 ??!

highschoolmom2010 · Answer

dang it dyslexia yea i did  XD

phi · Answer

I think you should get:
$$ a)  \sqrt{884}= 2 \sqrt{221} \b) \sqrt{523} \ c) \ 2 \sqrt{523}= 45.7 $$

highschoolmom2010 · Answer

i see the 2 sqrt 221 now can we walk through the b and c part?

phi · Answer

Do you remember what you did for step (b) on your paper?
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