A triangle has a 5 inch side, and an 8 inch side. Which could be the third side length of the

a 3 inches

b. 12 inches

c. 15 inches

d. 18 inches

B) 12in

Step-by-step explanation:

In a triangle of sides a, b, c we should have all these conditions fulfilled:

a+b>c, a+c>b, b+c>a.

Now a=5in, b=8in:

13>c, 5+c>8, 8+c>5

Only c=12in satisfies all these conditions.

B. 12 is the correct answer