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a² = 8
a = √8 = 2 * √2
a)
R - promień koła opisanego na kwadracie
2* R = (a * √2 )
R = 4/2 = 2
b)
r - promień koła wpisanego w kwadrat
2*r = a
r = a/2
r = √2
P=a^2
8=a^2
a=2 pierwiastki z 2
a)
19:29:17
P=PI R^2
R=1/2 d
d=a pierwiastek z 2
d=4
R=2
P=4 PI
b)
P=PI r^2
r=1/2 a
r= pierwiastek z 2
P= 2 PI