Step-by-step explanation:
yeah she be correct 2.1
7+8+10=25cm is the possibile perimeter of this
triangle.
Answer:
Ethan
![\csc\text{B}\in(-\infty,-1]\cup[1,\infty)](https://tex.z-dn.net/?f=%5Ccsc%5Ctext%7BB%7D%5Cin%28-%5Cinfty%2C-1%5D%5Ccup%5B1%2C%5Cinfty%29)