Question

please solve all this attached question with proper solution
if the answer will correct and helpful I will add it to the brainlist answer.

Answer 1

Let the 2 equal sides be x
And base be 1/2x
Perimeter =30
x+x+1/2x=30
x+x+x/2=30
2x+2x+x/2=30
5x/2=30
5x=30×2
x=30×2/5
x=6×2
x=12
The 2 equal sides of triangle are 12
And base is 1/2×12=6