
Modo Papel - Área do círculo e de suas partes
Authored by Sebastião Wesley Freitas da Silva
Mathematics
11th Grade
Used 7+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Qual medida do raio de um setor circular com abertura de 50º de modo que a área seja igual a 1.500 u.a?
30
40
50
60
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
“É o segmento de reta no qual as extremidades são pontos da circunferência.”
A definição acima refere-se
Ao lado
Ao raio
Ao apótema
À corda
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
396
33
99
132
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
ENEM — Um arquiteto deseja construir um jardim circular de 20 m de diâmetro. Nesse jardim, uma parte do terreno será reservada para pedras ornamentais. Essa parte terá a forma de um quadrado inscrito na circunferência, como mostrado na figura. Na parte compreendida entre o contorno da circunferência e a parte externa ao quadrado, será colocada terra vegetal. Nessa parte do jardim, serão usados 15 kg de terra para cada m2. A terra vegetal é comercializada em sacos com exatos 15 kg cada. Use 3 como valor aproximado para π.
O número mínimo de sacos de terra vegetal necessários para cobrir a parte descrita do jardim é
200
140
100
800
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Duas circunferências concêntricas têm raios iguais a 40 cm e 50 cm, conforme indica a figura. Calcule a área destacada.
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
113,04
125,6
56,52
108
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
706,5
47,1
94,2
675
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