If the area of a circle is 121π square units, what is its diameter?

if the circumference of a circle is 20π units, what is its area?

Graph y ≥ -x^2 - 1. click on the graph until the correct graph appears.

Plz determine whether the polynomial is a difference of squares and if it is, factor it. y2 – 196 is a difference of squares: (y + 14)2 is a difference of squares: (y – 14)2 is a difference of squares: (y + 14)(y – 14) is not a difference of squares

Im literally having a mental breakdown