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krok68 [10]
3 years ago
14

Ben made a model (shown below) of the square pyramid he plans to build when he grows up.

Mathematics
2 answers:
Nata [24]3 years ago
8 0

Answer:

It is 240

Step-by-step explanation:

It is 240 because I took the quiz

elena-s [515]3 years ago
4 0

Answer:

336 m^2

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:

A=A_b + 4A_t

where:

A_b=L^2 is the area of the base, where

L is the length of the base

A_t=\frac{1}{2}Lh is the area of each triangular face, where

h is the height of the face

Substituting,

A=L^2+2Lh

For the model in this problem,

L = 12

h = 8

Therefore, the surface area here is:

A=12^2 +2(12)(8)=336

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