Answer:
40/3 cm
Step-by-step explanation:
FE : DC
1 : 3
Since area ABCD = 400
s² = 400
s = 20
FE = ⅓(20) = 20/3 cm
AM = DC - FE
AM = 20 - 20/3 = 40/3
its b
2.25 aka 2 1/4
Answer
1953125
