Length of the arc of the circle is
.
Area of the sector
,
Where
is radius of the circle and
is central angle measured in radians.
Find the arc length.
\Radius of the circle is
cm and central angle
.
Convertt the angle into radian measure.
\
Consider
.
Substitute
and
in
.

Length of the arc is 7.854 cm.
\ \Find the area of the sector.
\Consider
.
Substitute corresponding values in above formula.
\
Thus, area of the sector is 35.342 square cm.
\ \Length of the arc is 7.854 cm.
\Area of the sector is 35.342 square cm.