Question

1) How do we find surface area? (What is it?)

2) What is the surface area of this pyramid?

Answer 1

Surface Area=360

Explanation:

All the triangles of a square pyramid are congruent meaning you can find the area of 1 and multiply by to find the total surface area of all 4 triangles.

Area of a triangle formula= bh/2

Area of 1 triangle= 13*10/2=65

Multiply by 4 to find the total surface area of the triangles: 65*4=260

Then add the area of the square base.

Area of Square base=10*10=100

Add the total area of the triangles and square base: 260+100=360

Answer 2

1) First find the base, then one triangle face and multiply it by four

2) 360 units squared

Explanation:

10*10 = 100

10*13 = 130

130*2 = 260

260 + 100 = 360