Subject: mathqa
Question: what is the length of the diagonal of a square whose area is 4 times of another square with diagonal as 5 v 2 cm ?
Option: 
A: 10', 'c ) 10 v 2', 'd ) 20', 'e ) 25']
B: 20 v 2', 'b ) 10', 'c ) 10 v 2', 'd ) 20', 'e ) 25']
C: 10 v 2', 'd ) 20', 'e ) 25']
D: 20', 'e ) 25']
Answer: C