Respuesta :

gmany

Answer:

h = 18 cm

Step-by-step explanation:

[tex]A=\dfrac{bh}{2}\\\\A=117\ cm^2\\b=13\ cm[/tex]

Substitute:

[tex]117=\dfrac{13h}{2}[/tex]               multiply both sides by 2

[tex]234=13h[/tex]            divide both sides by 13

[tex]18=h\to h=18\ cm[/tex]