Item 21 in your pottery class, you are given a lump of clay with a volume of 200 cubic centimeters and are asked to make a cylindrical pencil holder. the pencil holder should be 9 centimeters high and have an inner radius of 3 centimeters. what thickness x should your pencil holder have if you want to use all of the clay

The thickness of his pencil holder would be 1 cm.

Step-by-step explanation:

Since we have given that

Volume of lump of clay = 200 cubic cm

Height of pencil holder = 9 cm

Radius of pencil holder = 3 cm

Let the thickness of pencil holder be 'x'.

As we know the formula for "Volume of pipe":

Since x = R-r

x = 4-3

x=1 cm

Hence, the thickness of his pencil holder would be 1 cm.

i think it would be 42cm