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OpenStudy (anonymous):
The area of a circle with a radius of x is 1. What is the area of a circle with a radius of 2x?
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OpenStudy (anonymous):
Circle area formula \[A = \pi r^2\]
OpenStudy (anonymous):
where, r is the radius and A is the area.
OpenStudy (anonymous):
well it seems that he or she is not so interested in her problem.
OpenStudy (triciaal):
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