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Exercício de Universo e sistema solar
Exercício:
- Considerando 40.000 Km o perímetro da circunferência terrestre, qual é, aproximadamente, a menor distância (via superfície) entre o tropico de câncer e a cidade de Porto Alegre (lat. 30° S)?
- 720 Km;
- 2.500 Km;
- 3.300 Km;
- 5.900 Km;
-
7.000 Km;
4. 3.300 km
Essa é uma questão de lógica. Se a superfície terrestre tem 360º, ela é dividida em 12x por “fatias” imaginárias de 30º. Basta dividir os 40.000km também por 12 e teremos 3.300km para cada “fatia”.
O trópico de câncer fica a mais ou menos 23°N. Portanto, a distância entre Porto Alegre e o trópico é de 30°+23°=53°. Como 40.000 Km corresponde a 360°, fazemos uma regra de 3 simples:
40.000 —–360°
x ——53°
Portanto, x=5888.88Km, alternativa 5
é 3300 poq é so dividir 40000 por 12
e prontinhu
hehe
trópico de cancêr fica a 23º26’N, a distância entre porto alegre e o trópico é de 23º26’+23º =53º26′. Cada grau de paralelo de latitude corresponde a 111,11 Km, e cada minuto (‘) corresponde a 1,85, então fica assim
53 x 111,11= 5888,83
26×1,852 =48,15
Então é só somar os resultados 5888,83+48,15 = 5936,98 Km
então a alternativa correta é a 5
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