Chapter 1, Problem 63E

Interpretation Introduction

Interpretation:

The given area of farm in acres is to be converted into square miles.

Concept introduction: The conversion of one acre to ${\text{ft}}^{\text{2}}$ is done as,
  $1\text{acre}=43.560{\text{ft}}^{\text{2}}$

The conversion of one ${\text{ft}}^{\text{2}}$ into square miles is done as,
  $1{\text{ft}}^{\text{2}}=3.58\times {10}^{-8}{\text{mile}}^2$

To convert: The given area, $\text{435}\text{acres}$ into square miles.