Triangles

Equilateral triangle with side 40 cm has the same perimeter as an isosceles triangle with arm of 45 cm. Calculate the base x of an isosceles triangle.

Result

x =  30 cm

Solution:

x=3⋅40−2⋅45=30 cmx = 3 \cdot 40-2 \cdot 45 = 30 \ \text{cm}

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