Question

What is the surface area of the pyramid formed from the net shown here? The triangles are equilateral, and each triangle has a height of 5.2 centimeters. Write your answer rounded to one decimal point and with the correct unit.

Answer 1

The answer to your problem is, 62.4 square centimeters

Explanation:

The picture of the question in the attached figure we know that

The surface area of the triangular pyramid is equal to the area of the triangular base plus the area of its three lateral triangular faces

In this problem the triangles are equilateral, that means, the surface area is equal to the area of four congruent equilateral triangles so:

`A = 4 ( (1)/(2) b *h )`

now we can the following

bare = 6 centimeters

height = = 5.2 centimeters

We have to subistute

`A = 4 ( (1)/(2) 6*5.2 ) = 62.4 cm`

Thus the answer to your problem is, 62,4 centimeters