1.

The perimeter of an isosceles triangle is 42 cm and the ratio of the equal sides to its base is 3:4. The area of the triangle is​

Answer»

Answer:

Step-by-step EXPLANATION:

Let the numbers be 3X, 4X and 4x

3x+4x+4x=42cm

12x+42

x=42/12=3.5

3x=10.5

4x=14

A=½[√(a² − b² ⁄4) × b]



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