# Diameter

If the endpoints of a diameter of a circle are A(10, -1) and

B (3, 10), what is the radius of the circle?

B (3, 10), what is the radius of the circle?

**Your answer:**Tips to related online calculators

Line slope calculator is helpful for basic calculations in analytic geometry. The coordinates of two points in the plane calculate slope, normal and parametric line equation(s), slope, directional angle, direction vector, the length of the segment, intersections of the coordinate axes, etc.

Pythagorean theorem is the base for the right triangle calculator.

Pythagorean theorem is the base for the right triangle calculator.