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Question

Find the side of the square whose diagonal is 162 cm.

A
4 cm
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B
16 cm
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C
8 cm
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D
162 cm
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Solution

The correct option is C 16 cm
We know that,
1) All angles of a square are congruent. i.e 90o
2) Diagonal of a square bisects each of its angles.
Therefore, the square gets divided into 2 triangles of degrees 45o45o90o
sin45o=sidehyp
12=side162
side of the square =16 cm.

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