amalalghalib14
19.05.2020 •
Mathematics
Dose someone know this
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Ответ:
Ответ:
step-by-step explanation:
in order to find the area of the circle, we need its radius (r).
if perimeter of the triangle is equal to the circumference of the circle then we can write:
perimeter=5+2+5.39=12.39 = circumference=2pi(r)
solving for r, we get r=12.39/2pi = 1.97
so the area of the circle = pi(r)^2 = pi(1.97)^2 =12.19