Question

Find the area of the sector (in $c{m}^2$) whose arc length and radius are $8cm$ and $3cm$ respectively

Answer 1

Here, Radius, $r=3cm$
Length of arc, $l=8cm$
Area of the sector, $A=\frac{r}{2}\times$ Length of arc
$=\frac{3}{2}\times 8$
$=3\times 4=12$
$\therefore$ Area of sector is $12c{m}^2$.