What's the area of a sector of a circle that has a diameter of 10 in. if the length of the arc is 10 in.? a. 50 sq in. b. 25 sq in. c. 100 sq in. d. 75 sq in. i think it's a but correct me if i'm wrong

answer:  

step-by-step explanation:

here x represents the height of the pole,

and, the height of the shadow of the pole is 12 feet.

also, the angle of elevation from the top of the pole is 40°,

therefore,

by the low of sine,

which is the required equation for finding the value of x,