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Mathematics 19 Online
OpenStudy (anonymous):

what is the surface area of a sphere with radius 2? A. 4π units2 B. 16π units2 C. 2π units2 D. 8π units2

OpenStudy (anonymous):

A.

OpenStudy (anonymous):

r u sure?

OpenStudy (ivettef365):

SA = 4. pi. r^2 SA = 4. pi. 2^2 SA = 4.pi.4 SA = 16 pi

OpenStudy (anonymous):

@thihaaung Ill tell you how I got that

OpenStudy (anonymous):

u gave me wrong answer

OpenStudy (ivettef365):

Sphere Surface Area = 4 π r2

OpenStudy (anonymous):

@ivettef365 yea thats what I thought

OpenStudy (ivettef365):

sure you did

OpenStudy (anonymous):

@ivettef365 I thought it was 4 π r2 but its not sorry

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