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Sagot :
Answer:
633.94 squared inches
Step-by-step explanation:
15.75 x 15.75 = 248.0625
12.25 x 15.75 x 1/2 = 96.46875
since there are 4 triangles and they are equivalent...
96.46875 x 4 = 385.875
Surface area is...
385.875 + 248.0625 = 633.9375
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