Question

If AB measures 155, what is the length of the radius of the circle, to the nearest hundredth?

Answer 1

@mathstudent55 @cherio12

Answer 2

same thing? @cherio12

Answer 3

ya, but you work backwards. you are given length. now you need radius

Answer 4

okay so I do 2* 3.14 * 14 ? @cherio12

Answer 5

to find the cicumference

Answer 6

no, 14 is not the radius. It is the length of the arc from a to b

Answer 7

you would have to find its ratio to the circle

Answer 8

so we see that 14cm is from 155 degrees of the circle

Answer 9

so then what do I do? :) @cherio12

Answer 10

so to get a ratio we do 155/360

Answer 11

i got 0.430 ? @cherio12

Answer 12

for the ratio

Answer 13

yup, i got that too.

Answer 14

Okay so now that I got that what do I do? :) @cherio12