Running into a DIY project without a ruler or tape measure? A simple household item can give you accurate results in seconds, ...

The circumference of a circle is the distance around the shape. The ability to round a number to a number of decimal places or to a number of significant figures means that answers can be written to ...

The World Health Organization's current weight-based guidelines for assessing malnutrition in children with diarrhea are not as reliable as measuring the child's upper arm circumference, new research ...