Perimeter of circle

Calculate the circumference of described circle to the triangle with sides 9,12,15 cm.

Correct result:

o =  47.124 cm

Solution:

c=15 c2=a2+b2 152=122+92  D=c=15 cm  o=π D=3.1416 15=47.124 cmc=15 \ \\ c^2=a^2 +b^2 \ \\ 15^2=12^2+9^2 \ \\ \ \\ D=c=15 \ \text{cm} \ \\ \ \\ o=\pi \cdot \ D=3.1416 \cdot \ 15=47.124 \ \text{cm}



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

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