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Elijah wraps a gift box in the shape of a triangular pyramid. The figure below shows a
net for the gift box.
9.53 ft
11 ft
If all the triangles are equilateral, how much wrapping paper
did he use, in square feet?

Elijah wraps a gift box in the shape of a triangular pyramid The figure below shows a net for the gift box 953 ft 11 ft If all the triangles are equilateral how class=

Respuesta :

BrainlyMaster21

Understanding how to solve...

The base of each triangle is 11 ft, and the height of it is 9 ft.

And then, there are 4 of these triangles. So, as we know, when we do the formula for finding one triangle, we do [tex]SA=\frac{1}{2} *B*H[/tex]. But if we have to do it for 2, then we will do... [tex]SA = B*H[/tex], and applying that same trick, if we have to do it for 4 of them, we will do [tex]SA =2*B*H[/tex]

Finding answer:

B = 11

H = 9.53

[tex]SA = 2*B*H\\=2*11*9.53\\=2*104.83\\=209.66[/tex]

Answer:

209.66ft² of wrapping paper was used