Similarity coefficient

The ratio of similarity of two equilateral triangles is 3.5 (ie 7:2). The length of the side of smaller triangle is 2.4 cm. Calculate the perimeter and area of ​​the larger triangle.

Correct answer:

p =  25.2 cm
S =  30.55 cm2

Step-by-step explanation:

p1=3a=32.4=7.2 S1=2ah=2aa2(a/2)2=43a2=2.494 cm2 p=3.5p1=3.57.2=25.2 cm
S=3.52S1=3.522.494=30.55 cm2

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See also our trigonometric triangle calculator.
Pythagorean theorem is the base for the right triangle calculator.

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