

Geometria de Círculos e Quadrados
Interactive Video
•
Mathematics
•
9th Grade
•
Practice Problem
•
Hard
FREE Resource
5 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual a principal diferença entre uma circunferência e um círculo?
A circunferência é a linha que delimita o círculo, e o círculo é a região interna preenchida.
O círculo é a linha que delimita a circunferência, e a circunferência é a região interna preenchida.
Ambos os termos se referem exatamente à mesma figura geométrica.
A circunferência é a área da figura, enquanto o círculo é o seu perímetro.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual a relação correta entre o raio (R) e o diâmetro (D) de uma circunferência?
O diâmetro é igual ao raio (D = R).
O diâmetro é a metade do raio (D = R/2).
O diâmetro é o dobro do raio (D = 2R).
O diâmetro é o raio multiplicado por pi (D = πR).
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Se o raio de uma circunferência mede 5 cm, qual é a sua área? (Considere π como π)
10π cm²
25π cm²
5π cm²
100π cm²
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Um círculo tem uma área igual a 16π cm². Qual é o seu diâmetro?
4 cm
8 cm
16 cm
2 cm
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
O lado de um quadrado com área de 9 cm² tem a mesma medida do raio de um círculo. Considerando π = 3,14, qual é a área desse círculo?
9 cm²
28,26 cm²
18,84 cm²
6 cm²
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