Question

If triangle sides are 6, 8 and semi perimeter is 12, find third side

Answer 1

if semi perimeter is 12 then full perimeter will be 12×2=24 cm
perimeter of triangle =side +side+side 6+8+sidec=24
then 6+8=14
24-14=10cm third side of triangle

Answer 2

semi perimeter= 12
full perimeter=12×2
=24
perimeter of triangle= sum of all sides
24=6 +8+x
24=14+x
24-14=x
10=x
third side = 10