∵M、N分别是AC、BC的三等分点,
∴
CM
AC =
CN
BC =
1
3 ,
∵∠C=∠C,
∴△CMN ∽ △CAB,
∴
MN
AB =
CM
AC =
CN
BC =
1
3 ,
∴
38
AB =
1
3 ,解得AB=114m.
答:AB的长为114m.
∵M、N分别是AC、BC的三等分点,
∴
CM
AC =
CN
BC =
1
3 ,
∵∠C=∠C,
∴△CMN ∽ △CAB,
∴
MN
AB =
CM
AC =
CN
BC =
1
3 ,
∴
38
AB =
1
3 ,解得AB=114m.
答:AB的长为114m.