How do i solve this? it's so confusing.

The two square pyramids are similar. find the total volume of both pyramids if the ratio of their surface areas is 9/16

If you were constructing a triangular frame, and you had wood in the length of 4 inches, 4 inches, and 7 inches, would it make a triangle? would you be able to create a frame from these pieces of wood?

Multiply and simplify 2x^2 y^3 z^2 · 4xy^4 x^2