Question

what is the radius of an arc of 330cm which subtends an angle of 150°​

Answer 1

Answer:

Here, l = 330 cm

@ = 150° = 5π/6 rad

As, @ = l/r

where, @ = angle subtended

l = length of arc

r = radius

Now, r = l/@

or, r = (330×6×7)/5×22

or, r = 126 cm