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Q.

The length of the diagonal of the square is 10 cm. Find the area of the square.


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a

20 cm2

b

100 cm2

c

50 cm2

d

70 cm2 

answer is C.

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Detailed Solution

Given,
Length of the diagonal square =10 cm
We know that
=2× side    [Formula of diagonal of square]
=2× side =10
⇒ side =102
=1022
=52 cm
Now calculate the area of square =( side )2
=(52)2
=50 cm2
Correct option is 3.
 
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