Question

4.A circular wire of radius 7 cm is cut and bend again into an arc of a circle of radius 12 cm. The angle subtended by the arc at the centre is a) 50° b) 210° c) 100° d) 60°​

Answer 1

Answer:

please mark as branliest answer

Answer 2

Answer:

Correct option is B

210∘

Given, radius of circular wire =7 cm

Circumference of wire =2πr=2π(7)=14π

Radius of arc =12 cm

Angle subtended by the arc =radiusarc=1214π=67π

Angle subtended by arc =67π×π180=210∘