a= a/(360)pir^2

Solución

a = \frac{a}{360} π r^{2}

r = \frac{6 10}{π}, r = - \frac{6 10}{π}; a \neq = 0

Decimal

r = 10.70474 \dots, r = - 10.70474 \dots

Pasos de solución

a = \frac{a}{360} π r^{2}

Intercambiar lados

\frac{a}{360} π r^{2} = a

Simplificar

\frac{a}{360} π : \frac{πa}{360}

\frac{πa}{360} r^{2} = a

Multiplicar ambos lados por

360

πa r^{2} = 360 a

Dividir ambos lados entre

πa; a \neq = 0

r^{2} = \frac{360}{π}; a \neq = 0

Para

x^{2} = f (a)

las soluciones son

x = f (a), - f (a)

r = \frac{360}{π}, r = - \frac{360}{π}; a \neq = 0

\frac{360}{π} = \frac{6 10}{π}

- \frac{360}{π} = - \frac{6 10}{π}

r = \frac{6 10}{π}, r = - \frac{6 10}{π}; a \neq = 0

18 x^{2} = 0

1.25 x^{2} - 5 x + 5 = 0

so l v e f or r, M = \frac{g r ^{2}}{g}

0 = 12 - 3 x^{2}

9 b^{2} + 7 = 583