Question:The ratio of the area of a square to that of the square drawn on its diagonal is : 

A `1 : 1` 
B `1 : 2` 
C `1 : 3` 
D `1 : 4` 

+ Answer
B 

+ Explanation
Let side of a square = a. Then, its diagonal` = sqrt(2) a`.

Ratio of areas of squares with sides a & `sqrt(2) a`

`= a^2/(sqrt(2) a)^2`

`= 1/2 or 1 : 2`

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Irin Moni

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