Math Tools

Measure a hemisphere from radius for geometry, container sizing, and quick planning.

Measure a rectangular pyramid from length, width, and vertical height.

Measure a square pyramid from base side length and vertical height.

Measure a cube from a single side length for geometry, packaging, and quick sizing checks.

Measure ellipse area and circumference from the two semi-axis lengths.

Estimate the standard error of the mean from sample values.

Compare variability relative to the mean using coefficient of variation.

Measure how spread out a dataset is with variance and standard deviation.

Measure average spread from the mean using mean absolute deviation.

Measure a test score percentage and incorrect answers from the number of correct responses.