Answer:
17.5
Explanation:
The triangle is an equilateral triangle since all sides are equal
Area of a equilateral triangle is:


the sde of the square = diameterof the circle(d)
d = 6
r = d/2 = 3
ar(circle) = πr²
= π * 3²
= 9π
= 9*22/7
= 198/7
ar(shaded region) = ar(circle)-ar(triangle)

= 17.5