Solve the problem.The cross section of one type of weight-bearing rod is a circle as shown in the figure below. The rod can handle a stress of 10,000 pounds per square inch (psi). The relationship between the stress S that the rod can handle, the load F the rod must carry, and the diameter, d of the cross section is given by the equation 
If 
find the load the rod can support. Use ? ? 3.14 in your calculation. 
A. 166,106
B. 52,900
C. 664,424
D. 72,220
Answer: A
Mathematics
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