9. Wrong name for this angle: <2
10. Wrong name for this angle: <3
No. There are two spots in the vertical line. (Vertical line test)
Yes you can I hope this helped lol
The circumference formula is
C=Diameter x π=22 x π, the area formula is A=<span>π x R²
or R=</span><span>D/2=22/2=11
the answer is </span><span>d. C = 22π; A = 121π</span>