Question

please find the answers of the above 9 10 11 th question before sunrise​

Answer 1

Answer:

9.

Step-by-step explanation:

given :

diameter=40 cm

length of the chord =20 cm

Radius=20 cm

since,

radius =the length of Chord = 20 cm

hence the form Triangle in the circle is equilateral triangle.

so theta =60 °cm

we know that L=r theta

so l=20×60°×π/180°

l=20π/3

hence the length of the minor arc of the chord is 20π/3.....