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laila [671]
3 years ago
12

What is the total surface area of this square pyramid?

Mathematics
1 answer:
slamgirl [31]3 years ago
4 0

Answer:

The total surface area of this square pyramid is 297\ mm^{2}

Step-by-step explanation:

we know that

The surface area of a square pyramid is equal to

SA=b^{2} +4[\frac{1}{2}(b)(h)]

we have

b=9\ mm ----> the length side of the square base

h=12\ mm ----> the height of the triangular faces

substitute the values

SA=9^{2} +4[\frac{1}{2}(9)(12)]=297\ mm^{2}

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