>>930
いいえ。

外接円の半径を R とすると
 AB = 2R sin(∠AOB/2),
 BC = 2R sin(∠BOC/2),
 CD = 2R sin(∠COD/2),
 DA = 2R sin(∠DOA/2),
また題意より
 R = 65/8,
 BC = CD = 13,
 AB+BC+CD+DA = 44,
したがって
 AB + DA = 44 -13 -13 = 18,
 ∠AOB/2 = 2arctan(4/7) = arcsin(56/65) = 59.4897626゚
 ∠BOC/2 = 2arctan(1/2) = arcsin(4/5) = 53.130102゚
 ∠COD/2 = 2arctan(1/2) = arcsin(4/5) = 53.130102゚
 ∠DOA/2 = 2arctan(1/8) = arcsin(16/65) = 14.25003゚
よって
 AB = 14
 DA = 4