Answer:
4ft, 9ft, 6ft
Step-by-step explanation:
To make a triangle, the two smallest sides have to be greater than the longest side. So, if we add the sides for each answer:
3ft + 6ft < 10ft
3ft + 6ft = 9ft
4ft + 6ft > 9ft
4ft + 5ft < 10ft
we can see that only the third answer meet the 'side rule.'
