A huge, previously undiscovered prehistoric monument has been unearthed just a stone’s throw from Stonehenge. The monument is most likely Neolithic and was created more than 4,500 years ago.

This KS2 maths article explains how to measure the radius, circumference and diameter of a circle. ... Diameter. The diameter is a straight line drawn through the centre of a circle.

A huge, previously undiscovered prehistoric monument has been unearthed just a stone’s throw from Stonehenge. The monument is most likely Neolithic and was created more than 4,500 years ago.