 
 <prompt> ```
Di perimeter of one triangle na 160 cm. If two of di sides na 40 cm and 50 cm, calculate di length of di third side?``` <response>: ```To get the perimeter, you add all the sides o the triangles, so the first two sides add up to 40+50 = 90 cm.
If the perimeter of the triangle is 160, the remaining side is 160-90 = 70 cm.

Answer is 70.``` 