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The maximum area of a rectangle inscribed in a circle of radius = 6 cm is

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25 sq cm

72 sq cm

64 sq cm

75 sq cm

answer is B.

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Detailed Solution

r = 6cm

Area is max if

_{$x = y = \sqrt{2} r$}

Max area = xy

_{$= 2 r^{2}$}

_{$= 2 \times 36$}

_{$= 72 c m^{2}$}

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