Question

In ABC, the length of sides AB and AC is 6 cm each. The perimeter of
ABC is 20 cm. Which is the longest side of the triangle?

Answer 1

Answer:

Side BC is the longest.

Step-by-step explanation:

Given,

AB = 6

AC = 6

Perimeter = 20cm

Perimeter of triangle = sum of all sides

20 = AB+AC+BC

20 = 6+6+BC

20 = 12+BC

BC = 20-12

BC = 8

hope this helps <3

Answer 2

Answer:

BC is the longest side.

Step-by-step explanation:

solution,

Perimeter of ABC(P)=20cm

Length of AC sides(L)=6cm

Length of AC sides(L)=6cm

Now,

Perimeter of triangle (P)=Sum of it's all sides

=20cm=AB+AC+BC

=20cm=6cm+6cm+BC

=20cm=12cm+BC

=BC=20cm-12cm

=BC=8cm