I need help finding the volume for each shape, and can you also explain how you got the answers or the formulas that you used pls

Answer to your question: a. the fundamental theorem of algebra tells you that the equation will have two complex roots since the degree of the polynomial is 2. the roots are ​ x=1±i7√2 .number of roots=degree of polynomialhere, degree of polynomial is 2 so number of roots will be 2.hope it *_*

The american colonies would have been ruled by a king.