We want to calculate the surface area of a triangular pyramid. Let's see the given measurements of the pyramid.
We can use a net to calculate the surface area of the pyramid. Let's see the net!
The net is made up of triangles. We will calculate the area of each triangle separately, starting with the base. Let's substitute the measures of the base into the formula for the area of a triangle!
The area of the base is 173 square yards. Now let's take a look at the sides. Note that sides of the pyramid are congruent triangles. This means that they have the same area. Let's substitute the measures of the sides into the formula for the area of a triangle!
We found that the area of one triangle is 120 square yards. Since the triangles are congruent, that means that the area of every triangle is 120 square yards. Now we have all the information that we need to find the total surface area of the triangular pyramid!
Total Surface Area
173+ 120+ 120+ 120=533yd^2
The total surface area of the triangular pyramid is 533 square yards.
