a)
l=2πr
r=2√2
l=2π·2√2=4√2π
b)
r=√3-1=√2
l=2π·√2=2√2π
C=2pi * R
C=2 * pi * 2pierwiastek z 2
C=4pierwiaski z 2 pi
C=2 *pi * (pierwiastek z 3-1)
C=(2pierwiaski z3 - 2)* pi
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a)
l=2πr
r=2√2
l=2π·2√2=4√2π
b)
r=√3-1=√2
l=2π·√2=2√2π
C=2pi * R
C=2 * pi * 2pierwiastek z 2
C=4pierwiaski z 2 pi
C=2pi * R
C=2 *pi * (pierwiastek z 3-1)
C=(2pierwiaski z3 - 2)* pi