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balandron [24]
2 years ago
11

A circle is inscribed in an equilateral triangle with a side length measuring 10 mm.

Mathematics
1 answer:
Tamiku [17]2 years ago
8 0
For side length s the area of the triangle is
.. A = (√3)/4*s^2
The radius of the circle will be
.. r = s/(2√3)
so the area of the circle is
.. A = π*r^2 = π*s^2/12

The fraction of the triangle that is not in the circle is
.. 1 - (π/12)/((√3)/4)
.. = 1 -π/(3√3)
.. ≈ 39.54%
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