Find the surface area of the composite shape below

One-third of the people from country a claim that they are from country b, and the rest admit they are from country a. one-fourth of the people from country claim that they are from country a, and the rest admit they are from country b. in a combined census of the two countries, one-half of the total claimed to be from a. what is the ratio of the populations of country a to that of country b.

The step function g(x) is defined as shown.what is the range of g(x)? ***answer choices in picture.

What is the best approximation for the area of a circle with a radius of 4 m ? use 3.14 to approximate pi