Question

Find the length of the side of a triangle. Side a = 4 cm, and side b = 9 cm. The perimeter is 19 cm. Use P= a + b + c.

Answer 1

The answer is 6cm
Using (P=a+b+c) you’ll have 19=4+9+c and you want to solve for c. To do this you can use the same equation.
19=4+9+c
19=13+c
6=c

Answer 2

Answer:

top answer should be right

Step-by-step explanation: