If a Denotes the Area of the Sector of a Circle

Multiple Choice

If A denotes the area of the sector of a circle of radius r formed by the central angle θ, find the missing quantity. If
necessary, round the answer to two decimal places.
- $\mathrm { r } = 18$ feet, $\mathrm { A } = 84$ square feet, $\theta = ?$

A) $14.86 ^ { \circ }$
B) $1,560,152.87 ^ { \circ }$
C) $29.72 ^ { \circ }$
D) $780,076.43 ^ { \circ }$