Question

calcula el área de los siguientes circulos
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Answer 1

$sea \: radio \: = r \\ sea \: diametro \: = d \: \\ sea \: area \: = a$

$el \: diametro \: es \:la \: mitad \: de \: el \: radio \: =$

$r = \frac{d}{2} \\ r = \frac{16cm}{2} \\ r = 8cm$

$a = (\pi)( {r}^{2} ) \\ a = (\pi)(8cm \times 8cm) \\ a = (\pi)(64 {cm}^{2} ) \\ a = (3.1415..)(64 {cm}^{2} ) \\ a = 201.0619... {cm}^{2}$

$saludossssssss$