A net of a square pyramid is shown. The total area of the pyramid's triangular faces is 80 cm'. What is the area of the pyramid's square base in centimeters squared?

Answer:
I think it will be 400 cm^2
Step-by-step explanation:
8cm x 20cm/ 2 = 80cm^2 this is for the triangle
So the base is 20cm^2 and so me multiply that x2 which will give us 400cm^2 for the square