1.  If the length of diagonal AC of a square ABCD is 5.2 cm then area of the square ABCD is ?
A. 15.12 sq. cm
B. 13.52 sq. cm
C. 12.62 sq. cm
D. 10 sq. cm

Answer: Option B

Explanation:

Area = 1/2 x (Diagonal)2

= (1/2) x 5.2 x 5.2 cm2

= 13.52 cm2