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Areas
Área de un sector circular
 Un sector circular es la porción de un círculo delimitada por dos radios, r, y un arco de circunferencia, x.

Área de un sector circular

 $\fs2\;\;\;A\;=\;\frac{\pi\;\cdot\;r^2\;\cdot\;x}{360}$

Calcula el área de la figura sombreada.

 Área = $\frac{\pi\;\cdot\;r^2\;\cdot\;x}{360}$ r=10m x=360º-300º=60º Área = $\frac{\pi\;\cdot\;10^2\;\cdot\;60}{360}$ = $\frac{100\;\cdot\;\pi}{6}$ = $\frac{50\;\cdot\;\pi}{3}$ m2

Calcula el área del sector circular de 216   grados y cuyo radio mide 2

Utiliza $\fs2\;\pi=3.14$
Área=