Question

Find the area of the sector whose arc length ad radius are $12cm$ and $4cm$ respectively

Answer 1

Here, Radius, $r=4cm$
Length of arc, $l=12cm$
Area of sector, $A=\frac{r}{2}\times$ Length of arc
$=\frac{4}{2}\times 12=24$
$\therefore$ Area of sector is $24c{m}^2$.