Oieee camarada !
Resposta:
[tex] \huge \boxed{\sf{=~15}} [/tex]
Explicação passo-a-passo:
[tex] \\ \huge \sf{30~x~30~~=~\sqrt{900}~~\div~~2~~~=} \\ \huge \sf{\sqrt{900}~~\div ~~2~~=} [/tex]
[tex] ~~~~~~~~[/tex] Resposta correta é:
[tex] ~~~~\huge \boxed{\boxed{\sf{=~15}}} [/tex]
Abraços amigo !
