Two sides of a triangle measures 4cm and 9cm determine which of the following choices cannot be the measures of the third side. 8cm 5cm 10cm or 6cm
For a triangle, the length of any one side must be less than the sum of the lengths of the other two sides.
In this case, the two given sides measure 4cm and 9cm. Therefore, the third side must be less than 4cm + 9cm = 13cm.
Out of the given choices, the measure of the third side that is greater than 13cm is 10cm.
Therefore, the measure of the third side cannot be 10cm.