Question

а Draw a circle of radius 5 cm. draw a sector ,a quadrant and a tangent of the circle. Mark a point. ​

Answer 1

Perimeter of the sector =AC+BC+arc AB

AC=BC=radius=10.5 cm

Length of the arc of the sector with central angle, θ (in degree) is =

360

θ

×2πr

So, length of the arc AB=

360

60

×2π×(10.5)

=

3

1

×

7

22

×(10.5)

=11 cm

Perimeter of the sector =10.5+10.5+11=32 cm