Question

A sector subtends an angle of 70 at the centre of a circle of radius 21cm. Calculate the area of the sector?​

Answer 1

12.8 cm^2

Explanation:

Angle subtended by the sector=70

Radius of the circle= 21 cm

Area of the sector =
`(given angle)/(360)` x
`\pi r^(2)`

=
`(70)/(360)* (22)/(7)*21\\\\(70)/(360 ) *22*3\\(77)/(6)\\ 12.8`