37cm
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The isosceles triangle has a perimeter of: 14+14+9 = 37 feet
37
The perimeter of a triangle is equal to the sum of the three sides. Call the three sides a, b, and c. Then a+b+c=37 cm. Say a is the unknown side, b is a+3, c is a+4. So perimeter, 37 cm, is equal to a+(a+3)+(a+4). Add up your a's and your numbers, you get 3a+7=37. Subtract 7 from each side, you get 3a=30, a=10. The b (a+3) would equal 13, and c (a+4) would equal 14. And always check your work: 10+13+14 does equal 37.
Perimeter = sum of three sides = 96 cm One side of 34cm, another of 25 cm so the third is 96 - 34 -25 = 37 cm
The perimeter of the square is 96.