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In a triangle $ABC$ , if $AB = 4$ and $AC = 3$ , what is the length of $BC$ ?

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4

units

5

units

5.2

units

6

units

answer is B.

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Detailed Solution

Given that in a triangle

ABC

, if

AB = 4

and

AC = 3

Using Pythagoras theorem, we will find

BC

A B^{2} + A C^{2} = B C^{2}

{\Rightarrow 4}^{2} + 3^{2} = B C^{2}

\Rightarrow 16 + 9 = B C^{2}

\Rightarrow B C^{2} = 25

\Rightarrow BC = 5

Thus, the value of BC is 5 units.
Therefore, the correct option is 2.

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