What angle should bees prefer (in radians) Determine the minimum surface area of the cell

Mathematics For Machine Technology
8th Edition
ISBN:9781337798310
Author:Peterson, John.
Publisher:Peterson, John.
Chapter64: Volumes Of Spheres And Composite Solid Figures
Section: Chapter Questions
Problem 27A
Question

What angle should bees prefer (in radians)

Determine the minimum surface area of the cell

trihedral
rear
of cell
angle 0
h
b.
front
of cell
S
In a beehive, each ell is a regular hexagonal prism, open at one end with a trihedal angle at the other end. It is believed that bees form their cells in such a way as to
minimize the surface area for a given volume, thus using the least amount of wax in cell construction. Examination of these cells has shown that the measure of the apex
angle 0 is amazingly consistent. Based on the geometry of the cell, it can be shown that the surface area S is given by
3
S = 6sh
s? cot 0 + (3s² v3/2) csc 0
2
where s, the length of the sides of the hexagon, and h, the height, are constants.
(a) Calculate dS/d0. (Your answer may depend on s, h, andt (use t instead of theta)).
Transcribed Image Text:trihedral rear of cell angle 0 h b. front of cell S In a beehive, each ell is a regular hexagonal prism, open at one end with a trihedal angle at the other end. It is believed that bees form their cells in such a way as to minimize the surface area for a given volume, thus using the least amount of wax in cell construction. Examination of these cells has shown that the measure of the apex angle 0 is amazingly consistent. Based on the geometry of the cell, it can be shown that the surface area S is given by 3 S = 6sh s? cot 0 + (3s² v3/2) csc 0 2 where s, the length of the sides of the hexagon, and h, the height, are constants. (a) Calculate dS/d0. (Your answer may depend on s, h, andt (use t instead of theta)).
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