The area of a square is 144 sq cm. Find the length of its diagonal
-
A.
11(sqrt{3cm}) -
B.
12cm -
C.
12(sqrt{2cm}) -
D.
13cm
Correct Answer: Option C
Explanation
BD = (sqrt{x^2 + x^2})
= (sqrt{12^2 + 12^2})
= (sqrt{144 + 144})
= 2(144)
= 12(sqrt{2cm})