Question

pls solve this pls pls​

Answer 1

Step-by-step explanation:

by pythagorus theorum, $x^{2}$ + $5^{2}$ = $13^{2}$

                                        $x^{2}$ = $13^{2}$ - $5^{2}$

                                            = 169 - 25

                                            = 144

                                        x  = $\sqrt{144}$ = 12 this is answer

Answer 2

Answer:

Using Pythagoras formula

(AB)2= BC2 + AC2

(13)2= BC2 + (5)2

169 -25 = BC2

144= BC2

BC= 12