3 years ago

Can anyone help?? I don't understand.

1 answer:

6 0

If the height and base are equal, that simply means that b = h, or h = b

and we know the area is 18 m²

$\bf \textit{area of a triangle}\\\\
A=\cfrac{1}{2}bh\qquad 
\begin{cases}
b=h\\
A=18
\end{cases}\implies 18=\cfrac{1}{2}\cdot h\cdot h\implies 18=\cfrac{h^2}{2}
\\\\\\
36=h^2\implies \sqrt{36}=h$

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