On one grid 0.5 of the squares are shaded on another grid 0.05 of the squares are shaded which statement is more use < ,> or =

Can some one me with these questions

Quadrilateral efgh was dilated with the origin as the center of dilation to create quadrilateral e'f'g'h'. the quadrilateral was dilated using a scale factor of 2.5. the lengths of the sides of quadrilateral efgh are given. what is the length of side f'g'?

What is 4 square root 7^3 in exponential form?