Question

PLS HELP!!! What is the total surface area of the square pyramid whose net is shown below?

400 in^3

1200 in^3

800 in^3

1600 in^3

Answer 1

1600 in^2

Explanation:

We only have to add the areas of one square in the centre and 4 surrounding triangles.

area of the square=20×20=400 in^2

area of one triangle=1/2×20×30=300 in^2

area of four triangles=4×300=1200 in^2

So, total surface area of the square pyramid=400+1200=1600 in^2

*The units given should be in^2.

Answer 2

(20×20)+(2×20×30)

400+1200

1600inches^2