Students learn how to use Pythagoras» Theorem to calculate unknown lengths in a range of problems involving rig... (mr-mathematics.com)
It shows students how to tackle problems involving the area of a composite shape and solving a quadratic equation in order to find an unknown length or lengths. (tes.com)
«How daunting to move to a place we've never seen... for an unknown length of time... behind a priest who's got them used to the guitar!» (bookbrowse.com)