Question

What is the area of a sector with an arc length of $120cm$ and radius $4cm$?

• A. $120$ $c{m}^2$
• B. $240$ $c{m}^2$
• C. $260$ $c{m}^2$
• D. $180$ $c{m}^2$

Answer 1

The correct option is B $240$ $c{m}^2$

$r=4$cm

$l=120cm$

Area of sector $=\frac{l\times r}{2}$

$A=\frac{120\times 4}{2}$

$A=240c{m}^2$