Respuesta :

profereyes12122

Answer:

h = 10m

Step-by-step explanation:

[tex]A=\frac{bh}{2}[/tex]
[tex]90=\frac{18h}{2}[/tex]

[tex]18h=(90)(2)[/tex]

[tex]h=\frac{180}{18} =10[/tex]

Hope this helps

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