A triangle has 3 sides that each equal 13 cm.

What kind of triangle is it?

equilateral

Step-by-step explanation: First, it will be helpful to draw the triangle like I have done in the image attached so we can visualize it.

Notice that all of the sides of the triangle shown below have the same measure, 13 cm. A triangle in which all of the sides have the same length is equilateral. So the triangle shown below is equilateral.  

4/6 = 2/3

so it should take 3/3 hours per man. so 9 hours is the answer 3*3 =9

step-by-step explanation: