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The figure below shows a triangle ABC which is right-angled at C.

Find:
(a) AB when AC = 5 cm and BC = 12 cm.
(b) AC when AB = 20 cm and BC = 16 cm.
(c) BC when AC = 10 cm and AB = 26 cm.
(d) AB when AC = 5 m and BC = 6 m.