Galeehegins
Galeehegins Galeehegins
  • 04-06-2016
  • Mathematics
contestada

What is the surface area of a sphere with a radius of 3 centimeters?

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ldbgclb
ldbgclb ldbgclb
  • 04-06-2016
The equation for the surface area of a sphere is [tex]A=4 \pi r^{2} [/tex]

So plug in 3 cm for radius "r"

[tex]A=4 \pi ( 3cm)^{2} [/tex]

Simplify
[tex]A=4 \pi (9 cm^{2})[/tex]
[tex]A=36 \pi cm^{2} [/tex]

Depending on your teacher, they might want you to leave it like this or plug in 3.14 for [tex] \pi [/tex]
So your answer is either
[tex]A=36 \pi cm^{2} [/tex]
or
[tex]A=113.04 cm^{2} [/tex]
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