
Circunferência - NIVELAMENTO
Mathematics
9th Grade
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14 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Calcule o PERÍMETRO do triângulo formado pelas circunferências tangentes representadas na figura, sabendo que todas elas possuem raio igual a 4 cm.
a) 48 cm
b) 24 cm
c) 60 cm
d) 12 cm
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
A medida do arco BC é 92°. Determine as medidas x e y indicadas na figura.
x = 46° e y = 92°
x = 36° e y = 56°
x = 56° e y = 96°
x = 36° e y = 89°
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Se a circunferência maior tem um raio de 30 cm, qual é o comprimento da circunferência? (Use π = 3,14)
125,6 cm
251,2 cm
188,4 cm
400 cm
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Uma linha que conecta dois pontos na circunferência SEM passar pelo centro é chamada de ...
CORDA
RAIO
DIÂMETRO
TANGENTE
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
As posições relativas entre a circunferência e a reta r e entre a circunferência e a reta s são, respectivamente:
a) Tangente e externa.
b) Tangente e secante.
c) Externa e secante.
d) Secante e tangente.
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Os segmentos PA e PB, tangentes à circunferência, traçados de um ponto P exterior, têm o mesmo comprimento. Partindo dessa informação encontre sua medida.
15 cm
12 cm
9 cm
7 cm
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Determine a medida x do lado BC do triângulo ABC.
8 cm
20 cm
12 cm
46 cm
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