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Sagot :
Answer:
145 square inches
Step-by-step explanation:
The surface area of a square pyramid can be found using the formula ...
A = s(s +2h) . . . . . where s is the base side length, and h is the slant height
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application
Using this formula with s=5 inches and h=12 inches, we find the area to be ...
A = (5 in)(5 in +2(12 in)) = (5 in)(29 in) = 145 in²
The area of the pyramid is 145 square inches.
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Additional comment
This formula comes from the sum of the areas of the square base (s²) and the four triangular faces (4 × 1/2sh). That sum is ...
A = s² +2sh = s(s +2h)
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