Question

Can somebody help me please? :c
Points A and B lie on a circle centered at point O. If length of ABradius=π10, what is the ratio of the area of sector AOB to the area of the circle?

Answer 1

This are the answers given
110

π10

120

π20

Answer 2

I don't get what ABradius =pi 10 mean.

Answer 3

Me neither xc

Answer 4

maybe it means AB is the radius?

Answer 5

Probably :/

Answer 6

Do you think you can help me on this question?
What is the ratio of the length of DEown to the length of BCown?

Answer 7

http://cdn.ple.platoweb.com/PCAP-ASSETS-PROD/67133dd9aa2a4fcbb43ebe4361a828a5

Answer 8

sorry i don't understand what DEown means

Answer 9

T-T

Answer 10

DE is an arc I believe and BC is another arc