What is the surface area of a sphere with radius of 3.5? A. 12.25p B. 14p C. 24.5p D. 49p

S=4π r 2 - this is the equation for the surface area of a sphere. We know that the radius (r) is 3.5 so here's how to solve this:

S = 4 π r2

S = 4 π (3.5) 2

S = 4 π 12.25

S = 49 π

The surface area of a sphere with radius of 3.5 is 49 π.