Asked by Anna
what is the formula to estimate the amount of fabric that is on a 2" cardboard core?
Answers
Answered by
PsyDAG
Insufficient data. Is board 2" thick or 2" by 2"?
Answered by
Anna
2" diameter cardboard core
Answered by
PsyDAG
If 2" = diameter, is it a sphere or cylinder? If it is a cylinder, you need the height.
If a sphere, the surface area is:
A = 4πr^2
If d = 2, then r = 1 and r^2 = 1, therefore:
A = 4π
If a sphere, the surface area is:
A = 4πr^2
If d = 2, then r = 1 and r^2 = 1, therefore:
A = 4π
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