Then it is easy to know from Pythagorean theorem that AG=BG=3, BF=5,;
AE=4.8 can be obtained by area method, and EF= 1.4=AD.
∴CF=BE=3.6
Trapezoidal area = 0.5 * (1.4+1.4+3.6 * 2) * 4.8 = 24.
Time flies like running water. This semester has passed while you are busy with your work. My friend, as a math teacher, how do you fee