I am trying to get left margin = 1.5inch (3.81 cm) and right-, top-, bottom-margin = 2.5cm each. For this, I tried the following:
\documentclass[a4paper, 12pt, oneside]{book}
\pagestyle{plain}
\usepackage{calc}
\usepackage[left = 1.5in, right = 2.5cm, top = 2.5cm, bottom = 2.5cm]{geometry}
\usepackage{showframe}
\begin{document}
Some text
\end{document}
However, I am getting 4.4cm in the left margin, 4.4cm in the bottom margin and 3.3cm in the right margin. How to resolve this. Thanks in advance.