Answer:
16
Step-by-step explanation:
forgive me if i am wrong
Answer:
Step-by-step explanation:
QR = 27 ÷ 2 = 13.5
Answer:
c
Step-by-step explanation:
BE is parallel to CD, therefore, m∠BEC=m∠ECD, therefore mBC=mDE
BE is the diameter, so Arc BE is 180 degree
mBC+mCD+mDE=180
replace mCD with 3mBC, and replace mDE with mBC: mBC+3mBC+mBC=180
5mBC=180
mBC=180/5=36
mCD=3mBC=3*36=108
the inscirbed angle m∠ECD= the measure of arc DE=36
