12 * 12 = <<12*12=144>>144 square meters

8 * 5 = <<8*5=40>>40 square meters

144 - 40 = <<144-40=104>>104 square meters

104 square meters of the playground are not covered by the maintenance building.

# Answer

104
<|im_start|>system
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<|im_start|>user
There is a square playground that has a side length of 12 meters. There is a maintenance building on the playground that measures 8 meters by 5 meters. How many square meters of the playground is not covered by the maintenance building?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
104
There is a square playground that has a side length of 12 meters. There is a maintenance building on the playground that measures 8 meters by 5 meters. How many square meters of the playground is not covered by the maintenance building?
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