Roz9anhuiselPa Roz9anhuiselPa
  • 23-11-2016
  • Mathematics
contestada

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

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Greenleafable
Greenleafable Greenleafable
  • 02-12-2016
S=4πr2 - 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.
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