Chapter 12.5, Problem 2Q

Interpretation Introduction

Interpretation:

Number of $C_6$ ring that is joined across the sheet has to be calculated.

Concept introduction:

The angle bounded by the side of the hexagon is ${\text{30}}^{\text{o}}\text{.}$

Therefore,

${\text{Cos 30}}^{\text{o}}\text{= }\frac{\text{adjacent}}{\text{hypotenuse}}$