Respuesta :

ANSWER

18

EXPLANATION

We have to replace b = 4 and h = 9 in the formula

[tex]A=\frac{1}{2}b\cdot h[/tex][tex]A=\frac{1}{2}\cdot4\cdot9=2\cdot9=18[/tex]

The area of a triangle with base 4 and height 9 is 18

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