Solve the Problem $65 \mathrm {~cm}$ the Triangle Is Isosceles Now, but If Its Base

question 56

Multiple Choice

Solve the problem.
-The perimeter of a triangle is $65 \mathrm {~cm}$ . The triangle is isosceles now, but if its base were lengthened by $6 \mathrm {~cm}$ and each leg were shortened by $7 \mathrm {~cm}$ , it would be equilateral. Find the base of the original triangle.

• A) \(19 \mathrm {~cm}\)
• B) \(26 \mathrm {~cm}\)
• C) \(13 \mathrm {~cm}\)
• D) \(12 \mathrm {~cm}\)

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