# A truck moves along a circular path and describe 100 m

A truck moves along a circular path and describe 100 m when it has traced out 36^{o} at the centre. The radius of the circle is equal to

(a) 100/pai m

(b) 250/pai m

(c) 500/pai m

(d) 600/ pai m

**Answer: (c) 500/pai m **

**Solution:-**

A truck moves along a circular path and describe 100 m when it has traced out 36 degree at the centre.

Then, circumference of the circle = 100 x 360/36

= 1000 m

**Formula-**

**The circumference of the circle = 2 x pai x r**

So, 2 x pai x r = 1000

r = 1000/2 x pai

r = 500/pai

Then, the radius of the circle is 500/pai m

Hence, the correct answer is option (c) 500/pai m.