Question

find the length of arc of form a circuit of radius 12cm by a board 12cm long also find the area of minor segment.​

Answer 1

Answer:

=OB=12 cm= radius of the circle and .Let AB be the chord of 12 cm. hence we get an equilateral triangle OAB inside the circle that means ∠O=∠A=∠B=60

o

to find the length of the arcs (APB and ADB) of circle.

circumference of the circle =2πr=2π×12 length of the arc APB of the circle =

360

2π×12×60

=

360

2π×12×60

=4π=12.56 cm

Now the length of the arc AQB=

360

2π×12×(360−60)

=

360

2π×12×300

=20π