Question

If the angle of the sector with radius 4 units is 450
, then find the length of the arc
of the sector. (Use π = 3.14)

Answer 1

Answer:

We have,

Let the radius of circle r=4cm.

Angle θ=30o

Area of sector of circle

=360oθ×πr2

=360o30o×π×4×4

=12π×16

=34π

=34×3.14

=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

=50.24cm.2

Hence, this is the answer.



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