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amandasilva2166
@amandasilva2166
March 2022
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calcule o x dos trialgulos
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Atlantis
Olá, Amandasilva2166!
Iremos usar o Teorema de Pitágoras: h² = c² + c². Vamos lá:
a)
Hipotenusa: 5
Cateto: 4
Cateto: x
h² = c² + c²
5² = 4² + x²
25 = 16 + x²
16 + x² = 25
x² = 25 - 16
x² = 9
x = √9
x = 3
b)
Hipotenusa: 20
Cateto: 4x
Cateto: 3x
h² = c² + c²
20² = (4x)² + (3x)²
400 = 16x² + 9x²
400 = 25x²
25x² = 400
x² = 400 / 25
x² = 16
x = √16
x = 4
2 votes
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Iremos usar o Teorema de Pitágoras: h² = c² + c². Vamos lá:
a)
Hipotenusa: 5
Cateto: 4
Cateto: x
h² = c² + c²
5² = 4² + x²
25 = 16 + x²
16 + x² = 25
x² = 25 - 16
x² = 9
x = √9
x = 3
b)
Hipotenusa: 20
Cateto: 4x
Cateto: 3x
h² = c² + c²
20² = (4x)² + (3x)²
400 = 16x² + 9x²
400 = 25x²
25x² = 400
x² = 400 / 25
x² = 16
x = √16
x = 4