Answer
$s=14.661$ yards
$A=87.965$ square yards
Work Step by Step
The angle must be in radians for each of the formulae used below.To convert from degrees to radians, the answer in degrees must be multiplied by $\frac{\pi}{180}$.
Therefore $70°= 70 \times \frac{\pi}{180}$
$=\frac{7\pi}{18}$ radians
$s=r\times\theta$
$s=12\times\frac{7\pi}{18}$ meters
Therefore $s=14.661$ yards
$A=\frac{1}{2}\theta r^{2}$, where the angle, $\theta$ measured in radians
$A=\frac{1}{2}(\frac{7\pi}{18}) (12)^{2}$
$A=87.965$ square yards
