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Tiabia123
@Tiabia123
December 2019
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Um terreno tem forma retangular.Seu comprimento e 15 m maior que sua largura.Seu perimetro mede 210 m.Quais são as medidas desse terreno?
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milaornelas
210 = x + x + x + 15 + x + 15
210 = 4x + 30
120 = 4x
x = 30
comprimento = 30 + 15 = 45
largura = 30
1 votes
Thanks 1
arthur0zanon
210 - 30 é 180
milaornelas
desculpa
milaornelas
x = 45
milaornelas
comprimento = 60 /largura = 45
GuruGames
L = x ==> 45cm
C = x + 15 ==> 45+15 ==> 60cm
P = 2L + 2C
2x + 2(x + 15) = 210
2x + 2x + 30 = 210
4x = 210 - 30
4x = 180
x = 45
2 votes
Thanks 1
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Lista de comentários
210 = 4x + 30
120 = 4x
x = 30
comprimento = 30 + 15 = 45
largura = 30
C = x + 15 ==> 45+15 ==> 60cm
P = 2L + 2C
2x + 2(x + 15) = 210
2x + 2x + 30 = 210
4x = 210 - 30
4x = 180
x = 45