Roots that cannot be written as exact decimals are called surds. Leaving an answer in surd form means the answer is exact. This square has an area of 3 m 2. Calculate the length of each side.

It may be necessary to use Pythagoras' theorem and trigonometry to solve a problem. The shape ABCDEFGH is a cuboid. Length AB is 6 cm, length BG is 3 cm and length FG ...