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OpenStudy (anonymous):
Find the surface area of the ball. Leave the answer in terms of pi .d=68mm @Directrix
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Directrix (directrix):
A ball is a sphere in this problem.
OpenStudy (anonymous):
yea the picture was a tennis ball
Directrix (directrix):
Surface Area of Sphere If the diameter is 68, then the radius is 34 A = 4 * π * r² A = 4 * π * 34²
OpenStudy (anonymous):
do i use the pi in this one
Directrix (directrix):
Keep pi as pi. Do not approximate.
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OpenStudy (anonymous):
how exactly do i do that
Directrix (directrix):
I got 4624π square mm
OpenStudy (anonymous):
i got it
Directrix (directrix):
Good, next question.
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