A triangle has sides of length 3cm and 7cm. What can you say about the length of the third side?
Based on the given information, we can conclude that the length of the third side of the triangle must be greater than the difference of the two given lengths and less than the sum of the two given lengths.
In this case, the length of the third side must be greater than |3 - 7| = 4cm and less than 3 + 7 = 10cm. Therefore, the length of the third side must be greater than 4cm and less than 10cm.