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That depends on how many units there are in the diameter of the sphere.

* * * * *

If the radius of the sphere is R units then the radius of the cross section is sqrt(R2 - 122)

Therefore the cross sectional area is pi*(R2 - 122) square units.

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What is the radius of a cross section of a sphere that is 3 units from the center of the sphere?

If the radius of the sphere is R units then the radius of the cross section is sqrt(R2 - 32) Therefore the cross sectional area is pi*(R2 - 32) square units.


What is the area of the cross section of a sphere that is 3 units from the center of the sphere?

The cross section at this point forms a circle and its area is pi/32 which equals 9*pi square units. * * * * * Not quite. If the radius of the sphere is R units then the radius of the cross section is sqrt(R2 - 32) Therefore the cross sectional area is pi*(R2 - 32) square units.


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