The side of the square ABCD is 8 cm. The length ED of the rectangle EFGB is 10 cm. What is the length of FG

Answer:
sqrt39
Step-by-step explanation:
Because AE is 5 because the square intersects by half based on the SSS theorem. Therefore we can use The Pythagorean Theorem and get 8^2-5^2 to get sqrt39