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Physics 19 Online
OpenStudy (anonymous):

A cylindrical rod has a length of 73 cm and a diameter of 1.2 mm. What is the cross-sectional area in m2?

OpenStudy (turingtest):

assuming it's a circular cylinder the cross-section will be a circle, the area of which is given by\[A=\pi r^2\]where r is the radius

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