Find the area of the uncovered portion
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Area of whole square=side*side
=56*56
=3136m^2
Diameter of semi circle=56
therefore radius=56/2=28m
Area of semi circles=2(Area of semi circle)
=2(1/2pier^2)
=2*1/2*22/7*28*28
=22/7*784
=2464m^2
therefore
unshaded area=Area of whole square - area of semi circles(shaded area)
=3136-2464
=672m^2
Hope it helps
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