Solve the problem.A rectangular board is 11 cm by 14 cm. The foci of an ellipse are located to produce the largest area. A string is connected to the foci and pulled taut by a pencil in order to draw the ellipse. Find the length of the string.
A. 11 cm
B. 28 cm
C. 22 cm
D. 14 cm
Answer: D
Mathematics
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B. 
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A. True B. False
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A. $54 B. $34 C. $44 D. $24
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Perform the row operation(s) on the given augmented matrix.R2 = -5r1 + r2 
A. 
B. 
C. 
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