Find the length of the missing side of the triangle. The lengths of the triangles are 5m and 14m. The answer choices are:

A. 14.9

B. 19

C. 38

D. 361

I guess you mean 5m and 14m are the lengths of 2 sides of the triangle.

If the length of any side is equal or greater than the sum of the other 2 sides then you can; t make a triangle.

So for example 19 cannot the answer because 19 = 5 + 14. No triangle can be formed with sides that measure.

and 38 is greater than 14 + 5 so its cant be C.

The answer is A

Two sides of a triangle are: 5, 14.

By triangle inequality the sum of each pair of sides must be > the third side.

x + 5 > 14

Subtract 5 from both sides.

x > 9

x + 14 > 5

Subtract 14 from both sides.

x > - 9

5 + 14 > x

19 > x

x has to be greater than 9 but less than 19.

Letter A