Question

plzzz help me with this

Answer 1

to find the area of the circle we have to subtaract area of the square -area of the four shaded parts

Answer 2

If the side is b. The diameter is b
So the Radius is b/2
The area of the circle is
$\pi \times r ^{2}$
Pi×(b/2)²
22/7×b²/4
11b²/14