Question

A wall clock is 12 inches in diameter. The clock has twelve equally spaced numbers. What is the distance around the edge of the clock from 8 to 12?
π

4π

3π

2π

Answer 1

C = pi * d
4 / 12 graduations = 1/3
1/3 * pi * d = 4pi

Answer 2

This is again a perimeter problem. The complete perimeter of the clock is made of 12 sections, which you can think of as 12 slices of a pizza. You need to find the length that makes up four of these slices.

Complete perimeter = 2*pi*radius
Complete perimeter = 2*6*pi = 12pi

Remember that you want on;y four slices, so your required distance becomes
distance = (4/12)*12pi = 4pi

Answer 3

ty all