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A running track of 440 ft is to be laid ...

A running track of 440 ft is to be laid out enclosing a football field, the shape of which is a rectangle with a semi-circle at each end. If the area of the rectangular portion is to be maximum, then find the length of its sides.

A

110,70

B

120,60

C

130,50

D

None of these

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The correct Answer is:
A
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