Question

In a circle of diameter 42cm,if an arc subtends an angle of 60˚ at the centre where π = 22/7, then what will be the length of arc.​

Answer 1

Answer:

length of arc=2πr*60/360

=2*22*21/6*7

=22 cm

Answer 2

Step-by-step explanation:

Given:-

In a circle of diameter 42cm,if an arc subtends an angle of 60˚ at the centre where π = 22/7.

To find:-

what will be the length of arc.

Solution:-

Diameter of a circle (d)=42 cm

=>Radius of the circle (r)=Diameter/2

=>r=42/2=21 cm

An angle subtends by the arc =(x)=60°

Length of the arc (l)=x°×2πr/360° units

=>60°×2×(22/7)×21/360°

=>(60°×2×22×21)/(7×360°)

=>2×22×3/6

=>22

Length=22 cm

Answer:-

Length of the arc for the given problem is 22 cm

Used formula:-

If the radius of the circle is" r "units and the angle subtended by the arc in the circle is x° then the length of the arc is (x°×2πr)/360

π=22/7