The area of a square is 144 sqcm. Find the length of the diagonal.
- 13 cm
-
12√2 cm
- 12 cm
- 11√3 cm
The correct answer is: B
Explanation
Area of a square = x * x
144 = x2
√144 = x
12 = x
But d2 = 122 + 122
= 144 + 144
= 288
d = √288
= √144 x 2
= 12√2