jesuspreciado7370 jesuspreciado7370

04-03-2017
Mathematics

Answered

Find the approximate radius of a sphere with a surface area of 400 square inches.

Verified Answer :

sdmatera sdmatera

04-03-2017

The equation for surface area of a sphere is SA=4pir^2
We can plug in what we know to solve for r
400=4pir^2
100=pi*r^2 (divide out the 4)
100/pi=r^2 (divide out the pi)
√(100/pi)=r (square root of both sides)
r=5.6 rounded to the nearest tenth

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