6. ∆ ABC is right-angled at C. If AC = 5 cm and BC = 12 cm find the length of AB.
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Answer:
AB=13cm
Step-by-step explanation:
In right angled ∆ABC ,right angled at C,
AB=?, AC=5 cm,BC=12cm
By pythagoras theoram
AB^2=AC^2+BC^2
AB^2=(5)^2+ (12)^2
AB^2= 25+144
AB^2=169
AB^2= (13)^2
cancelling squares
Therefore AB=13
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