i need help

Cerise waters her lawn with a sprinkler that sprays water in a circular pattern at a distance of 15 feet from the sprinkler. The sprinkler head rotates through an angle of 300°, as shown by the shaded area in the accompanying diagram.

What is the area of the lawn, to the nearest square foot, that receives water from this sprinkler?

Responses
a. 79 ft. 2
b. 94 ft.2
c. 707ft.2
d. 589 ft.2