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y. Element of Area: Area:. rd θ. r. dr. θ. x. a. The use of polar coordinates to determine the area and centroid of a quadrant of circular area. z. cross-section area to be rotated around the z -axis through the angle. R. axis of rotation. side view. y. R. x. top view.
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y Element of Area: Area: rdθ r dr θ x a The use of polar coordinates to determine the area and centroid of a quadrant of circular area
z cross-section area to be rotated around the z-axis through the angle R axis of rotation side view y R x top view Volumes formed by rotating an area around an axis
Example: Find for the volume obtained by rotating the quadrant of circular area around the z-axis through 90 degs. Example: Find the volume obtained by rotating the quadrant of circular area shown in the figure below around the z-axis through 90 degs. z 3a a
Find for the volume obtained by rotating the quadrant of circular area around the z-axis through 90 degs. Homework 5/31: Find the volume obtained by rotating the quadrant of circular area shown in the figure below around the z-axis through 90 degs. z a a