Question

How do i answer this question? And what is the answer?

Answer 1

`\textit{area of a triangle}\\\\ A=\cfrac{1}{2}bh ~~ \begin{cases} b=base\\ h=height\\[-0.5em] \hrulefill\\ h=8.6\\ A=38.7 \end{cases}\implies 38.7=\cfrac{1}{2}b(8.6)\implies 38.7=4.3b \\\\\\ \cfrac{38.7}{4.3}=b\implies 9=b`

let's recall the height or altitude of a triangle is the perpendicular distance to base from the top.