Please help me it’s due tomorrow!

Determine the difference: 3.2 × 1010 – 1.1 × 1010. write your answer in scientific notation.

What is the ratio for the surface areas of the cones shown below, given that they are similar and that the ratio of their radil and altitudes is 4: 3? 23

Agrid shows the positions of a subway stop and your house. the subway stop is located at (-5,2) and your house is located at (-9,9). what is the distance, to the nearest unit, between your house and the subway stop?