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.

since the airplane is moving with constant speed then the distance travelled can be calculated by x=u*t

in km/h would be:

x=640*3.5=2.240 km

in m/s would be:

u=640 km/h= 640.000 m/h =640.000/ 3600 m/s =177.8 m/s

t= 3.5 h= 3.5 * 3600 s=12.600 s

then x=u*t= 177.8*12.600= 2.240.280 m

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step-by-step explanation: