Answer:
each square takes up a 10 by 10 square is you divide it into to four pieces then you use the formula for area of a circle
Explanation:
1) 10 x 10
Find the diameter which is 5
Use the area equation Pie r squared
Divide the diameter by 2 to get radius
3.14 x 2.5 squared
19.625
at that 4 times
You get are of circles
And Shaded area is 19.625