Point A is the point of concurrency of the angle bisectors of ADEF What is the length of ZA?

ZA =6cm

ZA=4cm

ZA=5cm

ZA= 3cm

The right answer for the question that is being asked and shown above is that: "602 − 402 = (3600 + 1600)(3600 − 1600) = 10,400,000" The equation that shows 602 − 402 being evaluated using the difference of squares method is that 602 − 402 = (3600 + 1600)(3600 − 1600) = 10,400,000