



 
Hi Wafa, I assume that May Lee's sister cut her quarter of the cake by removing a wedge as in the photo below. In the photo only about an eighth is removed. What remains is 3/4 of the cake so if the top surface area of 3/4 of the cake is 520 sq cm what is the top surface area of 1/4 of the cake? What is the top surface area of the entire cake? The area od a circular disk is π r^{2} sq cm where r is the radius in centimeters. What is the radius of the cake? What is its diameter? Penny  


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