Question

from an iron ring of radius 18cm a piece of central angle 30°is cut off this is then bent into a small circle what is the radius of this circle​

Answer 1

Answer:

I didn't understood this

Answer 2

Answer:

16.5

Step-by-step explanation:

iron ring of radius 18 centimetres,

Circumference of Circle = 2π(Radius)

Circumference of original ring = 2m (18)

= 36π cm

a piece of central angle 30° is cut off Hence arc length cut = (30/360) 36T

Зп см

Remaining length of ring = 36π - 33π =

33п см

Circumference of new circle = 33 cm

2TT R = 33TT

=> R = 33/2

=> R = 16.5 cm

radius of this new circle = 16.5 cm

Hope it helps you

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