pie times diameter is the circumference of a circle.
a sphere is a 3-dimensional object and you dont take the circumference but rather you take the surface area.
the circumference is to measure the total outside distance around the circle. the surface area is the measure the total outside distance around the sphere.
remember a sphere is like a ball that is rounded.
a circle is just a circle and can only be 2-dimensional.. like on paper
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Diameter is distance across a circle or sphere, circumference is the distance around a circle or sphere
Yes because a sphere has a circumference and a diameter.
Its circumference divides a sphere into hemispheres.
pr r^2
Infinity because the circumference of the circle is the same as the circumference of the sphere.