lng3313
what is the surface area of a sphere with a volume of 140



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amistre64
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Sa = 4pi r^2
V = (4pi/3) r^3

amistre64
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r = cbrt(3V/4pi) ..... maybe ☺

lng3313
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options are
880
130
420
339

a_kaffash
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130!

myininaya
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Volume of sphere is 4/3 *pi*r^3=140
Surface area of a sphere is 4*pi*r^2=3/pi*(4/3*pi*r^3)=3/pi*(140)

amistre64
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130 if i did it right

myininaya
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i got 133.69 blah blah

amistre64
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:)

lng3313
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thanks yall!

a_kaffash
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did u know the answer??????

a_kaffash
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:~\

MITL3ARN3R
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4/3pir^2