Question

Two sides of a triangle are 8 cm and 12 cm. Find the
measure of third side, if the perimeter of the triangle
is 31 cm.​

Answer 1

Step-by-step explanation:

8+ 12 = 20

So,20- 31 = 11

ans = 11

Answer 2

Step-by-step explanation:

two sides of triangle = 8 cm and 12 CM

two sides of triangle = 8 cm and 12 CMfind the perimeter of the triangle is 31 CM

so 8 + 12 = 20

so 8 + 12 = 20 20 - 31 is = 11

Hence, 11 is the measure of third side if the perimeter of triangle is 31 CM