Question

calcula la medida del área de la sombreada se cada circulo ​

Answer 1

Respuesta:

Explicación paso a paso:

1 )

Radio del círculo grande: [tex]r_{1} = \frac{24cm}{2} = 12cm[/tex]

Radio del círculo pequeño [tex]: r_{2} = \frac{24cm}{4} = 6cm[/tex]

[tex]Area -sombreada: As = ?[/tex]

[tex]As = \pi r^{2} _{1} -2\pi r^{2} _{2}[/tex]

[tex]As = \pi (12cm)^{2} -2\pi (6cm)^{2} = \pi (144cm^{2} -2(36cm^{2}) )=\pi (144cm^{2}-72cm^{2} )[/tex]

[tex]As = \pi (72cm^{2} ) = (3.14)(72cm^{2} )[/tex]

[tex]As = 226.08cm^{2}[/tex]

Respuesta:

     [tex]226.08cm^{2}[/tex]

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2)

[tex]Radio: r = 11cm[/tex]

[tex]A = \frac{\pi r^{2} }{4}[/tex]

[tex]A = \frac{\pi (11cm)^{2} }{4} = \frac{(3.14)(121cm^{2} )}{4} = \frac{379.94cm^{2} }{4}[/tex]

[tex]A = 94.985cm^{2}[/tex]

Respuesta:

   [tex]94.985cm^{2}[/tex]

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3 )

[tex]Radio-mayor : R = (5cm+4cm) = 9cm[/tex]

[tex]Radio-menor: r = 5cm[/tex]

[tex]Area-sombreada: As = ?[/tex]

[tex]As = \pi (R^{2} -r^{2} )[/tex]

[tex]As = \pi [ (9cm)^{2} -(5cm)^{2} ] = \pi ( 81cm^{2} -25cm^{2} )[/tex]

[tex]As = \pi (56cm^{2} ) = (3.14)(56cm^{2} )[/tex]

[tex]As = 175.84cm^{2}[/tex]

Respuesta:

   [tex]175.84cm^{2}[/tex]