# MATH 1120 -- Arc length and areas activity - You are trying...

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You are trying to find the volume of a solid usingcyclindrical shells.The solid was formed by rotation around the x-axis.What is the radius of a shell:xyeitherYour integral and bounds should be with respect to:
You are trying to find the volume of a solid using thedisc method.The solid was formed by rotation around the y-axis.What is the radius of a disc:
Your integral and bounds should be with respect to:
You are trying to find the volume of a solid using thedisc method.The solid was formed by rotation around the x-axis.What is the radius of a disc:
Your integral and bounds should be with respect to:xyeitherYou are trying to find theareaof a surface formed by rotation around the y-axisWhat is the radius of a band:xyeitherYour integral and bounds should be with respect to:xyeitherYou are trying to find theareaof a surface formed by rotation around the x-axisWhat is the radius of a band:xyeitherYour integral and bounds should be with respect to:xyeither1
1)Find the length ofy=12Rx22t-2dtfromx=2 tox=3By the fundamental theorem of calculus and the chain rule