Question

In a circle of radius 7 cm.an arc subtends an angle of 60 at the centre. Find 1 . The length of the arc 2. Area of the sector fromed by the arc

Answer 1

Answer:

arc length = radius × angle

= 7× pie/3 ( angle to be converted to radians measure)

area of sector =1/2r^2 × angle

=1/2 (7×7)×pie/3 (again angle to be converted to radians )