Brenda wants to attach a string of beads along the circular bottom edge of the lamp shade shown below. The diameter of the bottom of the lamp shade is 16 centimeters. About how many centimeters long should Brenda make the string of beads?

Here we have to calucluate the circufrence of the circle of Dia 16cm.

Circunfrence =pi*D.

=3.1416*16

=50.26cm

or say 50 cm.