Final answer:
The area of the square with sides equal to 11.7 cm is 136.9 cm^2.
Step-by-step explanation:
To calculate the area of a square, you need to square the length of one of its sides. In this case, since the length of the sides is given as 11.7 cm, you can square this value to find the area.
Area = side length * side length = 11.7 cm * 11.7 cm = 136.89 cm2.
Therefore, the area of the square is 136.9 cm2, when rounded to one decimal place.
Learn more about Calculating the area of a square