Answer:
25
Hope this helps!
Step-by-step explanation:
[tex]z=a+bi\\\\|z|=\sqrt{a^2+b^2}\\\\=========================[/tex]
[tex]7+24i\to a=7,\ b=24\\\\|7+24i|=\sqrt{7^2+24^2}=\sqrt{49+576}=\sqrt{625}=25[/tex]
