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Área y perímetro de círculos

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Área y perímetro de círculos

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Quiz sobre área y circunferencia

Created by

Bernardo Miranda Donoso
Bernardo Miranda Donoso
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Área y perímetro de círculos
 

Área y perímetro de círculosOnline version

Quiz sobre área y circunferencia

by Bernardo Miranda Donoso
1

¿Cuál es la fórmula del área de un círculo?

2

¿Qué mide la circunferencia de un círculo?

3

Si r = 3 cm, ¿cuál es el área?

4

Diámetro d=6 cm, circunferencia es?

5

Fórmula de circunferencia en términos de radio

6

Relación entre radio y diámetro

7

Si r=5 cm, ¿cuánta es la circunferencia?

8

Si el área es 50 cm², ¿radio aproximado?

9

Qué unidad se usa para circunferencia si el radio está en cm

10

Qué unidad se usa para área del círculo

Explicación

El área es π por el radio al cuadrado.

La circunferencia es la medida de la frontera del círculo.

Área = π·r² = π·9 ≈ 28,27 cm².

C = πd = π·6 ≈ 18,85 cm.

Circunferencia = 2π por el radio.

El diámetro es el doble del radio.

C = 2πr = 2π·5 ≈ 31,42 cm.

r = sqrt(A/π) ≈ sqrt(50/3,1416) ≈ 3,99 cm.

La circunferencia es una longitud, en cm si r está en cm.

El área es una medida de superficie, en cm² si r está en cm.

 
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