Perimeter of an isosceles triangle of 30 cm. Its basis of 12 cm. The party of a square is 2 cm shorter than triangle side. Find square perimeter.

Let x, party of a triangle, then party of a square x-2. R a triangle = and + in + with x + x +12=30 of the 2nd +12=30 of the 2nd =30-12 of the 2nd =18 x = 18÷2 x =6 Then the party of a triangle of 6 cm and the party of a square 6-2=4sm. R square а×4. Then P=6×4=24. Answer 24 cm.
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