What are the solutions of x^2 + 10x+16=0

The expression 6x2 gives the surface area of a cube, and the expression x3 gives the volume of a cube, where x is the length of one side of the cube. find the surface area and the volume of a cube with a side length of 6m

17 in long 1.3 ft wide and 8in high what is the volume

What is the lcm of 16 and 40 ? 24 and 40 ?