Find the area of the circle with diameter of 11mm leaving answer in terms of pi

For the equations below which statement is true ?

Find the roots of the polynomial function f(x) = x^3 + 2x^2 + x

The american academy of pediatrics wants to conduct a survey of recently graduated family practitioners to assess why they did not choose pediatrics for their specialization. provide a definition of the population, suggest a sampling frame, and indicate the appropriate sampling unit.