Odpowiedź :
P= π r²
P = 36 π cm²
π r² = 36 π/π
r² = 36
r = √36
r = 6 cm
Obw kola 2π r
Obw 2π * 6 = 12 π cm
:)
P = 36 π cm²
π r² = 36 π/π
r² = 36
r = √36
r = 6 cm
Obw kola 2π r
Obw 2π * 6 = 12 π cm
:)