Respuesta :

gmany

The formula of an area of a triangle:

[tex]A=\dfrac{1}{2}bh[/tex]

b - base

h - height

We have b = 8x and h = 7x. Substitute:

[tex]A=\dfrac{1}{2}(8x)(7x)=(4x)(7x)=28x^2[/tex]

Answer: 28x²