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Mill4h
@Mill4h
July 2022
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um disco de cobre tem 20 cm de diametro.qual e a area desse disco??
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Geraldo5
Verified answer
A de um circulo é:
A=
π*
r²
raio = diâmetro/2
r=d/2
A=
π*(d/2)²
A=
π*d²/4
A=
π*(20cm)²/4
A=100
π cm²
Fazendo
π=3,14
A ~ 314 cm²
3 votes
Thanks 5
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Verified answer
A de um circulo é:A=π*r²
raio = diâmetro/2
r=d/2
A=π*(d/2)²
A=π*d²/4
A=π*(20cm)²/4
A=100π cm²
Fazendo π=3,14
A ~ 314 cm²