In a right-angled triangle AOB, right angled at 0, OA = 13 cm and OB = 9 cm. Find AB and express it as
a simplified s

In a right-angled triangle AOB, right angled at 0, OA = 13 cm and OB = 9 cm. Find AB and express it as
a simplified surd.

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  1. Step-by-step explanation:

    In a ∆AOB

    AO (Perpendicular) = 13cm

    OB (Base) = 9 cm

    By Pythagoras theorem

    H² = P² + B²

    (AB)² = (AO)² + (OB)²

    (AB)² = (13)² + (9)²

    (AB)² = 169 + 27

    (AB)² = 196

    AB = ✓196

    AB = 14 cm

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