Question

please guys help me to solve this problem
step by step ​

Answer 1

Answer:

The answer is 25 × √13

=25× 3.60

= 90

Step-by-step explanation:

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Answer 2

Answer:

$\implies \: \: \: \: (AB)^2+(BC)^2=(AC)^2$

$\implies \: \: \: \: {25}^{2} +(BC)^2=( \sqrt{13} )^2$

$\implies \: \: \: \: 625 +(BC)^2=13$

$b^{2}=13-625$

$b^{2}=-612$

$b=6\sqrt{17}i \\ b=-6\sqrt{17}i$