Answer:
The correct answer is B. 14.14 cm
Step-by-step explanation:
Let's use the Pythagorean theorem to find out the measure of AC, this way because AC divides the square in two equal triangles:
AC is the hypotenuse of either Δ ABC or Δ ACD, which sides are 10 cm, therefore we have:
AC ² = Side₁²+ Side₂²
AC ² = 10²+ 10²
AC ² = 200
√AC ² = √200
AC = 14.14 cm
The correct answer is B. 14.14 cm