The diagram shows a cuboid ABCDEFGHABCDEFGHABCDEFGH.
AB=8 cmAB = 8 \text{ cm}AB=8 cm
AE=2 cmAE = 2 \text{ cm}AE=2 cm
AG=12 cmAG = 12 \text{ cm}AG=12 cm

Calculate the length of ADADAD.
Give your answer correct to 3 significant figures.
Practise Eduqas GCSE Maths 3d Pythagoras and Trigonometry with exam-style questions for Foundation and Higher tier. 28 questions, matched to the Eduqas GCSE Maths (C300QS) specification and written in Component 1 and Component 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.