Is cold equation a full length novel

No

The Cold Equations by Tom Godwin is a classic science-fiction short story that is not book length. It was one of the thirty stories he wrote. The Cold equations was published fourth. The short story's genre is real and dark. Tom Godwin also wrote three novels.

either a donut or a sphere or a pancake or a flat sphere. it depends on where the vertical line is.

if the line goes through the center of the circle and is perpendicular to a diameter containing the center, then you get a flat circle.

if the line and the diameter of a the circle meet in the center of the diameter and at an angle, you get a pancake.

if the line is on the circumference of the circle and is at right angles   to the circle you get a ring.

if the line contains the diameter, you get a sphere.

the the line is parallel to the diameter and touches the circumference, you get a donut.

8 ish depending on the what grade