#### Answer

r = 0.872 cm

#### Work Step by Step

A circular lock washer whose outside circumference
measures 5.48 cm is used in an electric box to hold an
electrical cable in place
To find the outside radius to the nearest tenth of a centimeter.
We know the circumference of the circle is given by the formula
c= $\pi$ d = 2$\pi$ r
5.48 = 2 * 3.14 * r
r = $\frac{5.48 }{2 * 3.14}$ = 0.872 cm