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
Verified Correct Answer: C.
Step-by-Step Mathematical Solution
BD = \(\sqrt{x^2 + x^2}\)
= \(\sqrt{12^2 + 12^2}\)
= \(\sqrt{144 + 144}\)
= 2(144)
= 12\(\sqrt{2cm}\)
Source: Myschool Past Questions Archive (Record #31417)