Question

area de un circulo con diametro de 9

Answer 1

Respuesta:

63.61

Explicación paso a paso:

$a = \frac{\pi {d}^{2} }{4} \\ a = \frac{\pi {9}^{2} }{4} \\ a = \frac{\pi(81)}{4} \\ a = \frac{254.46}{4} \\ a = 63.61$