Question

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

Answer 1

Answer:

The perpendicular from the center of circle always divides the chord in two equal parts.

The arc length of the circle is defined as radius multiplied by angle made by it at center of circle in radian.

By follwing above rule ….

So angle made by arc at center is pi/3.

Hence arc length is (pi/3)*9 = 3pi.

Step-by-step explanation: