Question

Using 3.14 determine the total amount of fencing, to the nearest hundredth of a foot, that he will need.

Answer 1

$\begin{gathered} Fencing=\theta r \\ r=5ft \\ \theta=360\text{\degree}-90\text{\degree} \\ \theta=270\text{\degree, the angle must be in radians} \\ \theta=270\text{\degree\lparen}\frac{\pi}{180\text{\degree}}\text{\rparen} \\ \theta=\frac{3}{2}\pi \\ Hence \\ Fencing=(\frac{3}{2})(3.14)(5ft) \\ Fencing=23.55ft \\ The\text{ total amount of fencing is 23.55ft} \end{gathered}$