In the given right angled triangle, find the length of AC.

14 cm

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12 cm

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13 cm

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15 cm

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Solution

The correct option is C 13 cm
ABC is a right angled triangle.
Using Pythagoras theorem,
AC² = AB² + BC²
AB = 5cm
BC = 12 cm
Hence,
AC² = 5² + 12²
⇒ AC² = 25 + 144 = 169
⇒ AC = √169 = 13 cm

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