Plz answer it fast. i will mark as brainliest.

well I didn't know the exact shape inscribed in the inner square but I found you the area of the shaded part of the circle

Step-by-step explanation:

first of all find total area of circle

diameter of the circle is equal to the side of the square then radius is 10

then area is

then find the square inscribed

of diagonal equal to diameter

then apply Pythagorean theorem

then area of square is

the answer is c: divide the arc's degree measure by 360°, then multiply by the circumference of the circle.

d. 145*2 is 290 than the total angle is 360 then minus 290 then divide by two