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Mathematics 18 Online
OpenStudy (anonymous):

HELP PLEASE!!!!!!! Find the surface area of the sphere to the nearest square unit. Use a calculator. A. 13 in.2 B. 50 in.2 C. 6 in.2 D. 3 in.2

OpenStudy (anonymous):

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OpenStudy (anonymous):

surface area of sphere is\[4\pi r^{2}\]

OpenStudy (anonymous):

im srry im still confused please explane

OpenStudy (anonymous):

r is radius of sphere

OpenStudy (anonymous):

|dw:1360608828843:dw|

OpenStudy (anonymous):

here 2 is the diametre then radius = 1

OpenStudy (anonymous):

oh ok i thaught the radius was 2

OpenStudy (anonymous):

soooo it will be 13

OpenStudy (anonymous):

thanks

OpenStudy (anonymous):

ya

OpenStudy (anonymous):

welcome:)

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