CERN is restarting its Large Hadron Collider (after a two-year massive upgrade) to start working on amazing experiments to reveal the identity of “dark matter” and to search for tiny black holes that ...

The parallel sides of a trapezium are labelled 𝒂 and 𝒃. The perpendicular height is the shortest distance between the parallel sides and is labelled 𝒉. Calculating the area of a trapezium is a ...