Question

I need help with this question.

Answer 1

A triangular pyramid is a pyramid having a triangular base. It has 4 faces, 6 edges and 4 vertices.

Since the area of one face is 25 $in^{2}$

Therefore, surface area of triangular pyramid = 4 $\times$ area of one face

= $25 \times 4$

= 100 $in^{2}$.

So, the surface area of triangular pyramid is 100$in^{2}$.

Therefore, color is red.