Question

) If AB = !4 cm , AF = 5 cm ; find the area of ∆ FAB .​

Answer 1

Answer:

$\sf\green{ Note \: -}$

Diagram in attachment

$\begin{gathered}\begin{gathered}\pink{ \frak{Given}} \begin{cases} \sf \: Height\:= 5\: cm \\ Base \: = \: 4\: cm \sf \end{cases} \\ \\\end{gathered}\end{gathered}$

Formula used :

$\begin{gathered}\begin{gathered}: \implies \underline{ \boxed{\displaystyle \sf \bold{\: \frac{1}{2} \times \: Base \: \times\: Height }} }\\ \\\end{gathered}\end{gathered}$

$\begin{gathered}\begin{gathered}\\ : \implies \displaystyle \sf \: \frac{1}{2} \times \: 4\: \times\: 5\\ \\ \\\end{gathered}\end{gathered}$

$\begin{gathered}\begin{gathered}\\ : \implies \displaystyle \sf \: 2\: \times\: 5\\ \\ \\\end{gathered}\end{gathered}$

$\begin{gathered}\begin{gathered}: \implies \underline{ \boxed{\displaystyle \sf \bold{\: 10\: cm^2}} }\\ \\\end{gathered}\end{gathered}$

So, the area of ∆ FAB = 10 cm²