Question

BC= 15, DC= 28. what is the diameter of circle O to the nearest tenth ?

Answer 1

HI :D

Answer 2

@jdoe0001
@jigglypuff314
@sweetburger
@KellyN

Answer 3

i learned geometry long enough to take the test then i forgot

Answer 4

its not a test.. anyways do u know the answer?

Answer 5

did i say it was a test... i said that i took geometry and only remebered the concepts long enough to take my test then i forgot them at least some of them

Answer 6

once you find CA, subtract CB from it, and that'd be the diameter BA

Answer 7

whats CA though?

Answer 8

we dunno, but we have the others
ahmm what would you get for CA from \(\bf CD^2=CB\cdot CA \quad ?\)

Answer 9

13.1/37.3/52.3/67.3
those are the options

Answer 10

notice, that CD=28, CB=15 thus \(\bf CD^2=CB\cdot CA \implies 28^2=15\cdot CA\)

Answer 11

idk =/

Answer 12

well.... can you isolate CA? or "solve for " CA?

Answer 13

784

Answer 14

hmmm.... do you know how to solve linear equations?