A problem that we had in math class today is : The perimeter of a triangle is 16cm. What is the missing measurement? The triangle had 5cm on one side, 41mm on another, and the last side was blank. Well first of all, you have to make sure all of the sides are in one unit of measurement. One side is in cm, and the other in mm. In the question, it said that the perimeter of the triangle is 16cm, so let's change it to cm. If you had 41mm, you would have to move the decimal over to the left one space. So now it is 4.1cm. Then you will have to add 5cm and 4.1cm together which is 9.1cm. Now if you know the triangle is 16cm, you just have to subtract 16cm and 9.1cm. The answer is 11.9. So there you have it!
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