Applying Pythagoras’ Theorem in Triangle ABC

Applying Pythagoras’ Theorem in Triangle ABC

Secondary 2

In the diagram, \(AD\) is perpendicular to \(BC\).

Calculate the length of \(BD\).
Calculate the length of \(DC\).
Calculate the area of \(\Delta ABC\).

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Answer:(a) \(BD=5\text{ cm}\) (b) \(DC=9\text{ cm}\) (c) \(84\text{ cm}^2\)

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