Question

A string is placed on the outside of a clock going clockwise from 12to 9. The clock has a radius of 6 inches. What is the length of the string

Answer 1

9π inches

Explanation:

we know clock start from 12 o'clock to 9 o'clock, it will be 270 degree. Then we convert it to radian is 3π/2. We get the radian and the radius. So we can apply the formula of the lenghth of an arc.

l = rθ

l=6*3π/2=9π inches