Urgente, lo necesito ya 1-Dos círculos tienen circunferencias cuya suma es de 12π cm. y áreas cuya suma es de 20π cm cuadrados. Determinar el radio de cada círculo.

2-Demostrar que la gráca del sistema está acotada. Es decir, se debe proponer un círculo tal que su radio sea sucientemente grande para contener la región de los puntos factibles.
y ≥ x²
x² + (y − 2)² ≤ 4

Harold wrote this equation to model the level of water in a pool over time. the variable x represents time in hours. f(x) = 3,500 - 225x which statements about the situation are true? check all that apply. the water level is rising. the water level is falling. the initial level of water in the pool was 3,500 units. the initial level of water in the pool was 225 units. the pool was empty after 14 hours. the water was 2,600 units high after 4 hours.