Humans are made up of many types of cells, and these cells have a broad range of sizes. For example, an immune system cell called a neutrophil has a radius of approximately 8 μm, while a type of connective tissue cell called a fibroblast has a radius of about 15 μm. Using the Formula for the Surface Area of a Sphere and assuming both cell types are perfectly spherical, how many times larger is the surface area of a fibroblast compared to the surface area of a neutrophil? In your answer include the surface area of the neutrophil and the fibroblast.