Calcular el radio de un circulo de area 25m^2
Identificando como:
A= Area
r= Radio
(PI) = 3.1416
La ecuacion del area es: A = (PI) * (r)^2 Despejando r:
(r)^2 = (A/PI) => r = (A/PI)^(1/2) => r = RAIZ CUADRADA (A/PI)
Si A= 25 m^2
Sustituyendo en la ecuacion:
r= (25/PI)^(1/2) = 5/(PI^(1/2))
RACIONALIZANDO:
r = [5/(PI^(1/2))] * (PI^(1/2))/(PI^(1/2)) = (5*(PI^(1/2)))/(PI)
