Suppose you make napkin rings by drilling holes with different diameters through two wooden balls (which also have different diameters) . You discover that both napkin rings have the same height h as shown in the figure. Use cylindrical shells to compute the volume of a napkin ring created by drilling a hole with radius d through the center of a sphere of radius D and express the answer in terms of 
. 
Definitions:
Q11: Evaluate the definite integral. <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB5971/.jpg" alt="Evaluate
Q20: If a snowball melts so that its
Q22: Find the area of the shaded region.
Q24: Use logarithmic differentiation to find the derivative
Q28: Evaluate <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB5971/.jpg" alt="Evaluate ."
Q30: Use a graph to estimate the values
Q47: Find the critical number(s), if any, of
Q49: Set up, but do not evaluate, an
Q74: Find the first and the second derivatives
Q103: Find equations of the tangent lines to