(k-2)^2=9 solve the equation ​

What is the volume of this container?

Find the length of the normal and the angle it makes with the positive x-axis. (see pictured below)

Plzz ! 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? yes or no? = explain your mathematical thinking/show your work: