Question

The radius of a circle is 6m. Calculate the lenght the arc of cicle if the angle subtended by the arc at the centre is 180degree

Answer 1

Answer:

Given

• Radius of circle = 6 m
• Angle = 180°

To find

• length of arc

_________________________

Now ,

We know that

Length of arc = 2πrθ/360°

Where

• r : radius of circle = 6 m
• θ : Angle subtented by arc = 180°
• π = 3.14

Substituting the values we have

→ 2(3.14)(6)(180)/360

→ 6.28 × 3

→ 18.84

Hence , length of arc = 18.84 m