Question

What is the area of the shaded region?please help guys ​

Answer 1

Answer:

Answer is 330

Step-by-step explanation:

$area \: of \: shaded \: region = \pi \: {r}^{2} - \pi {x }^{2} \\ here \: r = 11cm \: and \: x = 4cm \\ = \pi( {r}^{2} - {x}^{2} ) \\ = \pi( {11}^{2} - {4}^{2} ) \\ = \pi(121 - 16) \\ = \pi(105) \\ = \frac{22}{7} \times 105 \\ = 22 \times 15 \\ = 330 \: {cm}^{2} \\ therefore \: area \: of \: the \: shaded \: region \: = 330 \: {cm }^{2}$

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