A rectangular piece of poster board measures 70 centimeters by
50 centimeters. The net of a cube with 12-centimeter edges is
cut from it. What is the area of the poster board left?

Plz help plz give me the answer

The ph level of a blueberry is 3.1 what is the hydrogen-ion concentration [h+] for the blueberry

This is a map of the mars exploration rover opportunity predicted landing site on mars. the scale is 1cm : 9.4km. what are the approximate measures of the actual length and width of the ellipse? i mostly need to know how to set it up : )