A square pyramid is shown below:

Mathematics

2 answers:

madreJ [45]3 years ago

8 0

Let Surface Area A, a the base edge and h the height:

A = a²+2a√(a²/4+h²)

h=?

pythagorean theorem:

h²=c²-a²

h=√(c²-a²)

h=√(8²-(.7/2)²)= 8

plug it in the above equation A= 11.7ft²

So A is correct

grigory [225]3 years ago

7 0

Hello,

The correct answer is A) 11.69.

Hope this helps!!!! (:

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