Question

radius chord sector of a circle 4cm​

Answer 1

We have,

Let the radius of circle r=4 c

Angle θ=30°

Area of sector of circle

=$\frac{0}{360degree}$ × πr²

=$\frac{30degree}{360degree}$ ×π×4×4

​=$\frac{\pi }{12}$  ×16

=  $\frac{4\pi }{3}$

=  $\frac{4}{3}$ × 3.14

=4.186cm²

 Area of major sector = Area of circle-area of minor sector

=πr² −4.186

=3.14×4×4−4.186

=3.14×16−4.186

=50.24cm²

 

Hence, this is the answer.