Question

Cual es la respuesta ayuda​

Answer 1

Respuesta:

Explicación paso a paso:

$12.$

$A_{1} = a*b$

$A_{2} = 4 (c*c)= 4c^{2}$

$Area -sombreada: As = ?$

$As = A_{1} -A_{2}$

$As = a*b -4c^{2}$

$Si$   $a = 5 ; b = 8 ; c = 1.$

$As = (5)* ( 8) -4(1)^{2} = 40-4$

$As = 36$ $unid.^{2}$

RESPUESTA:

    $As = 36$ $unid.^{2}$

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$13.$

$A_{1} = ?$

$Ancho: a$

$Largo: L$

$Area-sombreada: As = ?$

$Radio: r = \frac{a}{2}$

$A_{1} = a*b$

$A_{2} = \pi r^{2} = \pi (\frac{a}{2})^{2}$

$A_{2} = \frac{\pi a^{2} }{4}$

$As= A_{1} -A_{2}$

$As= a*b -\frac{\pi a^{2} }{4}$

$a = 5 ; b = 8 ; c = 1.$

$As = (5)*(8)-\frac{\pi (5)^{2} }{4} = 40-\frac{25\pi }{4}$

$As = 40-6.25\pi = 40-6.25(3.14)$

$As = 40-19.625$

$As = 20.375$ $unid.^{2}$

RESPUESTA:

 $As = 20.375$ $unid.^{2}$