A.
Luas prsgi= 14cm*14cm= 196 cm^2
Luas lngkrn=(phi* 14cm*14cm)/2= 308 cm^2
Luas yg d arsir=
196cm^2 +308cm^2 =504 cm^2
B.
Luas lngkran= phi* 5cm*5cm= 78.5 cm^2
Luas prsgi= (10cm*10cm)- {Luas lngkran/2}= 100cm^2- {78,5cm^2/2}= 100cm^2- 39,5 cm^2= 60,75 cm^2
Luas daerah yg diarsir= 78.5cm^2+ 39,25cm^2= 139,25cm^2