Chapter 2 - Acute Angles and Right Triangles - Section 2.3 Finding Trigonometric Function Values Using a Calculator - 2.3 Exercises - Page 68: 77

703 ft

$V=45\,mph=\frac{45\,mi}{h}\times\frac{5280\,ft}{1\,mi}\times\frac{1\,h}{3600\,s}=66\,ft/s$ $g=32.2$, $f=0.14$ and $\theta=3^{\circ}$ $R=\frac{V^{2}}{g(f+\tan\theta)}=\frac{66^{2}}{32.2(0.14+\tan3^{\circ})}=703\,ft$