The length of the diagonal of a square is 12 cm. Find its area and perimeter.	Pick one
A) 31.84 cm B) 33.84 cm C) 35.84 cm D) 38.84 cm E) 38.92 cm
Diagonal of a square = 12 cm   Area of square = 1/2 (d)²   = 1/2 (12)²   = 1/2 × 12 × 12   = 72   Side of a square = √Area   = √72   = √(2 × 2 × 2 × 3 × 3)   = 2 × 3√2   = 6 × 1.41   = 8.46 cm   Perimeter of square = 4 × 8.46 = 33.84 cm   ANSWER OPTION :33.84 cm
<result>B</result>
The length of the diagonal of a square is 12 cm. Find its area and perimeter.