Posted by Anonymous on Saturday, May 5, 2012 at 6:49pm.
What is the approximate surface area of the sphere? C= 37.68 km

Math  Ms. Sue, Saturday, May 5, 2012 at 6:55pm
C = pi * d
37.68 = 3.14 * d
37.68 / 3.14 = d
12 = d
_____________________________
Surface Area of a Sphere = 4 pi r 2
A = 4 * 3.14 * 6^2

Math  Bosnian, Saturday, May 5, 2012 at 7:09pm
Circumference :
C = 2 r pi
C = 2 r pi Divide both sides by 2 pi
C / 2 pi = r
r = C / 2 pi
r = 37.68 / ( 2 * 3.14 =
r = 37.68 / 6.28
r = 6 cm
Area:
A = 4 r ^ 2 pi
A = 4 * 6 ^ 2 * pi
A = 4 * 36 * pi
A = 144 pi
A = 144 * 3.14
A = 452.16 cm ^ 2

Math  Azariah, Thursday, March 17, 2016 at 1:49pm
The area equals 452.16.
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