Question

Radius of a sector of a circle is 3.5 cm and length of its arc is 2.2 cm. Find the area of the sector.

Answer 1

Radius of the sector, r = 3.5 cm

Length of the arc, l = 2.2 cm

∴ Area of the sector = $\frac{1}{2}lr=\frac{1}{2}\times 2.2\times 3.5$ = 3.85 cm²

Thus, the area of the sector is 3.85 cm².