The diagram shows a cuboid ABCDEFGHABCDEFGHABCDEFGH.
AE=4 cmAE = 4 \text{ cm}AE=4 cm
AD=5 cmAD = 5 \text{ cm}AD=5 cm
DC=8 cmDC = 8 \text{ cm}DC=8 cm

Calculate the length of AGAGAG.
Give your answer correct to 3 significant figures.
Practise OCR GCSE Maths 3d Pythagoras and Trigonometry with exam-style questions for Foundation and Higher tier. 28 questions, matched to the OCR GCSE Maths (J560) specification and written in the written papers 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.