A square whose diagonal is 10 cm long has area equal to

28 c m^{2}

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34 c m^{2}

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50 cm

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None of these

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Solution

The correct option is C 50 cm
Given the length square of diagonal is 10 cm
Then area of square= $A = \frac{(d)^{2}}{2} = \frac{(10)^{2}}{2} = \frac{100}{2} = 50 c m^{2}$

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Each diagonal of a square is $12 c m$ long. Its area is
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(b) $72 c m^{2}$
(c) $36 c m^{2}$
(d) none of these

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The diagonal of a square is 10 cm. Its area is:

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