Question

HELP PLEASE


A rolling pin is shaped like a cylinder with a diameter of 3 inches and a height of 12 inches. How many square inches of space does the rolling pin come in contact with after one complete roll?

Answer 1

Answer:

$A = 127.17$ square inch

Step-by-step explanation:

Square inches of space covered by rolling pin after one complete roll is equal to the outer surface area of cylinder.

As we know,

Surface area of Cylinder $A=2\pi rh+2\pi r^2$

Substituting the given values in above equation, we get -

$A = (2*3.14*1.5*12) + (2 * 3.14*1.5^2)\\A = 113.04 + 14.13\\A = 127.17$

$A = 127.17$ square inch

Answer 2

Answer:that’s wrong

Step-by-step explanation: