Oblicz pole koła:
a) O promieniu 3 cm
b) O średnicy 6 mm
c) O obwodzie 8 π
P=Π*r2
a.)
P = 3,14 *3
P=9,48cm2
b.)
r= 3mm
P= 3,14 * 3
P= 9,48 mm2
c.)
r= 8π/2π
r=4
P= 3,14 * 4
P=12,56
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P=Π*r2
a.)
P = 3,14 *3
P=9,48cm2
b.)
r= 3mm
P= 3,14 * 3
P= 9,48 mm2
c.)
r= 8π/2π
r=4
P= 3,14 * 4
P=12,56