Question

(2)
The radius of a circle is 9 cm. Find the
length of an are of this circle which
cuts off a chord of length, equal to
length of radius.​

Answer 1

Answer:

Step-by-step explanation:

In a circle if a chord length = it's radius, then an equilateral triangle is formed by connecting two ends of the chord to the center of the circle.

Now, sectored angle = 60 degrees

Bcs it's an equilateral triangle

Arc length can be found by using the following rule

Arc length = sectored angle / 360 into 2.pi.r

Arc length = 1/60 into 6.28 into 9

Arc length = 9.42