14 points, what are these 3 answers?
2 answers:
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Answer:
Step-by-step explanation:
The surface area of a square pyramid is the sum of the area of the squared base + 4 times the area of each triangular face, therefore:
where:
is the area of the base, where
L is the length of the base
is the area of each triangular face, where
h is the height of the face
Substituting,
For the model in this problem,
L = 12
h = 8
Therefore, the surface area here is:
Answer:
Step-by-step explanation:
We need to use the properties shown below to solve this:
1.
2.
3.
Area of a triangle is given by 1/2 * base * height, so we do that and simplify: