Question

Which one of the following equations has a graph when the circular cylinder has a radius of 2?

a. x² + y² = 2
b. x² + z² = 2
c. y² + z² = 2
d. x² + y² = 4

Answer 1

The equation that represents the graph of a circular cylinder with a radius of 2 is x² + y² = 4.

Step-by-step explanation:

The equation that represents the graph of a circular cylinder with a radius of 2 is x² + y² = 4. This is because the equation of a circle with a center at the origin and a radius of r is given by x² + y² = r². Substituting the radius value of 2 into the equation, we get x² + y² = 4.