Answer: 12 cm
Step-by-step explanation:
Let x be the leg of the given isosceles triangle.
Then, the base of isosceles triangle = x+7
Consider the perimeter of the isosceles triangle, we get
[tex]x+x+x+7=43\\\\\Rightarrow\ 3x+7=43\\\\\Rightarrpw\ 3x=43-7\\\\\Rightarrow\ 3x=36\\\\\Rightarrow\ x=12[/tex]
Hence, the legs of the given isosceles triangle = 12 cm.
