What is the measure of the central angle if the sector area is 220 square units and the radius is 12 units? round the selection to the nearest unit. a. 175 b. 112 c. 231

Sanderson is having trouble with his assignment. his shown work is as follows: − 3 7 7 3 = − 3 7 × 7 3 = − 21 21 = −1 however, his answer does not match the answer that his teacher gives him. complete the description of sanderson's mistake. find the correct answer.