Solve the Problem $69 \mathrm {~cm}$ the Triangle Is Isosceles Now, but If Its Base

question 55

Multiple Choice

Solve the problem.
-The perimeter of a triangle is $69 \mathrm {~cm}$ . The triangle is isosceles now, but if its base were lengthened by $2 \mathrm {~cm}$ and each leg were shortened by $4 \mathrm {~cm}$ , it would be equilateral. Find the length of the base of the original triangle.

• A) \(21 \mathrm {~cm}\)
• B) \(25 \mathrm {~cm}\)
• C) \(18 \mathrm {~cm}\)
• D) \(19 \mathrm {~cm}\)

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