



 
Hi Fae, Is this the diagram you have in mind? I let R be the radius of the larger circle so R = 12 cm. Let r be the radius of the smaller circles. What is the relationship between R and r? What is the value of r? Find the area of the large circle. Find the area of each of the smaller circles. By subtraction find the area of the part of the larger circle that remains if you remove the 7 smaller circles. Penny  


Math Central is supported by the University of Regina and The Pacific Institute for the Mathematical Sciences. 