

Cálculo de Circunferências e Círculos
Interactive Video
•
Mathematics
•
9th Grade
•
Practice Problem
•
Hard
FREE Resource
5 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é a relação entre o diâmetro (D) e o raio (R) de uma circunferência?
D = R
D = 2R
R = 2D
D = R/2
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é a fórmula para calcular o comprimento (C) de uma circunferência com raio (R)?
C = πR²
C = 2πR
C = πD
C = R²
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é a fórmula para calcular a área (A) de um círculo com raio (R)?
A = 2πR
A = πR²
A = πD
A = 2R
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Se o diâmetro de uma circunferência mede 10 cm, qual é o seu comprimento?
5π cm
10π cm
25π cm
20π cm
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Se o comprimento de uma circunferência é 8π cm, qual é a área do círculo correspondente?
4π cm²
8π cm²
16π cm²
64π cm²
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