Can someone help me, please!

Ten times the square of a non-zero number is eqaul to ninety times the number

A3-dimensional figure has a square base and 4 lateral faces that meet at a point. explain the difference between the cross sections when a slice is made perpendicular to the base through the vertex, and when a slice is made perpendicular to the base and not through the vertex

Write the equations in logarithmic form 7^3=343