Question

Suppose that a particular artillery piece has a range r = 5710 yards . find its range in miles. use the facts that 1mile=5280ft and 3ft=1yard

Answer 1

$5710\,yd=5710\,yd\cdot\dfrac{3\,ft}{1\,yd}\cdot\dfrac{1\,mi}{5280\,ft}\\\\=\dfrac{5710\cdot3}{5280}\,mi\\\\=3.2443\overline{18}\,mi$