Ответ:
R = abc / 4S
a = 5, b = 6, c = 9
p = (a+b+c)/2=(5+6+9)/2 = 10
S = √(p*(p-a)*(p-b)*(p-c)) = √(10*5*4*1) = √200 = 10√2
R = (5*6*9) / (4*10√2) = 270/(40√2) = 27/(4√2)
Ответ: R = \frac{27}{4 \sqrt{2}}
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Ответ:
R = abc / 4S
a = 5, b = 6, c = 9
p = (a+b+c)/2=(5+6+9)/2 = 10
S = √(p*(p-a)*(p-b)*(p-c)) = √(10*5*4*1) = √200 = 10√2
R = (5*6*9) / (4*10√2) = 270/(40√2) = 27/(4√2)
Ответ: R = \frac{27}{4 \sqrt{2}}