Oblicz pole i obwód koła opisanego na kwadracie o polu 64 cm².
P=a²
64cm²=a²
a=8cm
d=a√2
d=8√2cm
r=1/2d
r=1/2*8√2cm
r=4√2cm
L=2πr
L=2π*4√2cm
L=8√2πcm
P=πr²
P=π(4√2cm)²
P=32πcm²
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Oblicz pole i obwód koła opisanego na kwadracie o polu 64 cm².
P=a²
64cm²=a²
a=8cm
d=a√2
d=8√2cm
r=1/2d
r=1/2*8√2cm
r=4√2cm
L=2πr
L=2π*4√2cm
L=8√2πcm
P=πr²
P=π(4√2cm)²
P=32πcm²