マージン設定が一貫していない

Question

現在、論文をタイプしています。テキスト余白の要件は、上 2cm、右 2cm、左 4cm、下 2cm です。私の設定は、章のタイトルがあるページを除くすべてのページで機能します。解決方法はありますか? pdfLaTeX コンパイラを使用しています。

**\documentclass[12pt,a4paper]{report}

\usepackage{amsmath, amsthm, amssymb}
\usepackage{array}
\usepackage{anysize}
\usepackage{faktor} 
\usepackage{placeins}
\usepackage{float}
\usepackage{enumerate}
\usepackage{fancyhdr}%for page number font
\usepackage{lmodern}%also for page number font
\usepackage[pdftex]{graphicx}
\usepackage{caption}
\usepackage{booktabs, calc, cleveref}
\usepackage{mathptmx}%Font: Times New Roman
\usepackage{setspace}
\usepackage[font={small},labelfont=bf]{caption}
\usepackage[titles]{tocloft}
\usepackage[notquote]{hanging}
\usepackage{sectsty}.
  \chapternumberfont{\nohang\centering\large\MakeUppercase} 
  \chaptertitlefont{\nohang\centering\large\MakeUppercase}
  \sectionfont{\fontsize{12}{15}\selectfont}
\usepackage{tikz}
\usepackage[final]{pdfpages}
\usepackage[footskip=1cm]{geometry}
\geometry{
   left=40mm,
   right=20mm,
   top=20mm,
   bottom=20mm,
 }
 %%%%%%%
\renewcommand{\cftchapleader}{\cftdotfill{\cftdotsep}}
\renewcommand\cftchappresnum{CHAPTER } 
   \cftsetindents{chapter}{0em}{6em}      

\pagestyle{fancy}
\lhead{}
\chead{}
\rhead{}
\lfoot{}
\cfoot{}
\rfoot{\thepage}
\renewcommand{\headrulewidth}{0pt}
\renewcommand{\footrulewidth}{0pt}
 %%%%
\fancypagestyle{plain}{
\fancyfoot{}
\fancyfoot[R]{\fontsize{10pt}{10pt}\selectfont\thepage}
\renewcommand{\headrulewidth}{0pt}
\renewcommand{\footrulewidth}{0pt}}
\pagestyle{plain}
%%%%
\renewcommand{\contentsname}{Table of Contents}
\renewcommand{\bibname}{REFERENCES}
%%%%%

\setstretch{2}
%%%%%%%%%%%

\begin{document}
\pagenumbering{arabic} 
\setcounter{page}{1}
%Chapter 1
\chapter{\MakeUppercase{INTRODUCTION}}

\section{Background of study} 
Associating a group with a graph and finding relationships between them is 
an area of research that has generated much interest. Research on this 
subject aims at investigating relationships between groups and graphs and at 
exploring applications of one to the other.
\newpage
The main contributions of this work
\end{document}**