A B C is a triangle, right - angled at B . If A B =20 cm and B C =21 cm find A C.
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Answer:
29cm
Step-by-step explanation:
AC is the hypotenuse so,
AC² = AB² + BC²
AC² = 20² + 21²
AC² = 400 + 441
AC = √841
AC = 29cm
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