solve all these(must be correct) you get 20points 5 star review & a thank you. i need help with this please:)

Step-by-step explanation:
1) D pi/9 (multiply by pi/180)
2) B pi/3
3) A 20° (multiply by 180/pi)
4) A 255°
5) 11.8" ( 2 * pi * R * theta / 360)