Question

calcula el radio y la longitud de un circulo cuya area mide 28.26 diametro cuadrado

Answer 1

Area =$\pi *R^{2}$

28.26 cm² = 3.1416xR²

R² = 28.26/3.1416

R² = 8.9954 = 9

$R = \sqrt{9}=3$

R = 3 cm

Diametro = 2R = 2(3) = 6 cm

Longitud =$\pi *6$

= 3.1416x6 = 18.8496 cm