Mark the correct alternative in the following: A circular wire of radius 7 cm is cut and bent again into an arc of a circle of radius 12 cm. The angle subtended by the arc at the centre is

Question

Philoid · Accepted Answer

Here, radius of circular wire is r=7 cm

So, length of wire=2×π×r

=2×π×7

=14×π

Wire is cut and bent again into an arc of a circle of radius 12 cm.

So, length of arc=length of wire=14×π

We know, angle subtended by the arc is given by,

=210°

Mark the correct alternative in the following:A circular wire of radius 7 cm is cut and bent again into an arc of a circle of radius 12 cm. The angle subtended by the arc at the centre is

Mark the correct alternative in the following:
A circular wire of radius 7 cm is cut and bent again into an arc of a circle of radius 12 cm. The angle subtended by the arc at the centre is