Question

in a circle of radius 21 cm and are substands an angle of 60° at the circle . find area of sector?​

Answer 1

Answer:

Area of the sector OAPB

Step-by-step explanation:

We know that the area of a sector formed by the arc of a circle with radius r

and subtended by an angle θ

is given by θ360∘×πr2

So, area of the sector OAPB =θ360∘×πr2

=60/360×π(21)^2

=1/6 x 22/7 × 21 × 21

=1/3 × 11 × 3 × 21

=231 cm2

i hope this is the answer.