Question

Find the area of the shaded portion in the square.
(assuming the central point of each arc is the corresponding corner)
help me

Answer 1

First you need to find one of the shaded areas. This is area of square - (1/4) circle:
\[2^{2}-(1/4) \pi 2^{2} = 4 - \pi\]
Now we subtract 2 times that area from the area of the square:
\[2^{2} - 2(4 - \pi ) = 4 - 8 + 2 \pi = 2 \pi - 4 = 2.28\]