Ncircle g, r = 3 units. maria draws a circle with double the area of circle g.
what is the area of maria’s circle?

G--> a = pi.r² = pi.3² = 9pi
m --> 2a = pi.r²
2*9pi = pi.r²
18pi = pi.r²
r² = 18
m = pi.r²
m = 18pi

Circle g has area = pi*r^2 = pi*3^2 = 9pi units squared 

maria's circle area = 2*9pi = 18pi units squared 

hope