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What is the circumference of a circle that has an area of 50.24 square centimeters?

Question

What is the circumference of a circle that has an area of 50.24 square centimeters?

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Solution

Para encontrar la circunferencia de un círculo a partir de su área, podemos seguir estos pasos:

  1. Fórmula del área del círculo: A=πr2 A = \pi r^2 donde A A es el área y r r es el radio del círculo.

  2. Despejar el radio: r2=Aπ r^2 = \frac{A}{\pi} r=Aπ r = \sqrt{\frac{A}{\pi}}

  3. Sustituir el valor del área: r=50.24π r = \sqrt{\frac{50.24}{\pi}}

  4. Calcular el valor del radio: r=50.243.141616=4 cm r = \sqrt{\frac{50.24}{3.1416}} \approx \sqrt{16} = 4 \text{ cm}

  5. Fórmula de la circunferencia: C=2πr C = 2\pi r

  6. Sustituir el valor del radio: C=2π×4 C = 2\pi \times 4

  7. Calcular la circunferencia: C=8π8×3.1416=25.1328 cm C = 8\pi \approx 8 \times 3.1416 = 25.1328 \text{ cm}

Por lo tanto, la circunferencia del círculo es aproximadamente 25.13 centímetros.

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