According to BC=4AD=4 radical number 2, BE= 1.5 radical number 2 can be obtained.

Because the angle ABE=45, we can find AB=3 and EC=2.5.

Because it is a 45-degree right-angled triangular plate, the angle FEC = 45, so we can get the angle FEC = 45, and the triangular FEC is an isosceles right triangle. FC=FE=2.5 .

Answer 2

As shown in the figure, the triangle ABE is an isosceles right triangle, the angle BAE is a right angle, AB=3, then BE=3? 2, EC= root number 2

In an isosceles right triangle, the angle AEB = 45°, so the angle FEC = 90, so FC = 2°.