Answer:
41
Step-by-step explanation:
48-3=45
45-4=41
Area shaded = Area big circle- Area of small circle;
200 pi= pi•(2x)^2 -pi•6^2;
200pi= pi•4x^2 -pi•36;
200pi=pi•4(x^2 -9) divide both sides by 4pi;
50=x^2 -9; So x=sqrt(59)~7.68cm
1, she picks about 20+12+(20+28)=32+48=80.
