Question 973465
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The large rectangle has total area:
Area=LW=(45m)(105m)=4725 square meters
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The small rectangle has area:
Shaded Area=LW=(30m)(45m)=1350 square meters
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The triangle has area:
Shaded area=(1/2)bh=(1/2)(20m)(45m)=450 square meters
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The unshaded area is the total area minus the shaded areas:
4725m^2-1350m^2-450m^2= 2925 square meters