Answer:
5 in²
Explanation:
You want the surface area of a square pyramid with side length 1 in and slant height 2 in.
Surface area
The area of one triangular face is ...
A = 1/2bh
A = 1/2(1 in)(2 in) = 1 in²
The area of the square base is ...
A = s²
A = (1 in)² = 1 in²
Total
The total surface area is ...
total area = base area + 4 × area of one face
total area = 1 in² + 4 × 1 in²
total area = 5 in²
The surface area of the square pyramid is 5 square inches.
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