Question

"A triangle has a perimeter of 13 and one side of length 3. If the lengths of the other two sides are equal, what is the length of each of them?"

Answer 1

Answer:

The length of each is 5

Explanation:

Perimeter of triangle = sum of three sides

Assuming the length of each of the equal sides is y

13 = y+y+3

13-3 = 2y

2y = 10

y = 10/2 = 5