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Q.

If the diagonal of a square is 10 cm, then its area is

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a

50sq. cm

 

b

50 2 sq. cm

 

c

100 2 sq. cm

 

d

100 2 sq. cm

 

answer is B.

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Detailed Solution

 

d= 2 a10= 2 aa= 10 2

Area of a square

= a 2 = 10 2 2 = 100 2 =50 cm 2

 
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