Please help me with math the diagram below shows the plan of the first floor of a double storey house

1. calculate the area, in cm² of bedroom 1. express the answer in standard form

Of four points are collinear, they are also coplanar

Kira looked through online census information to determine the overage number of people living in the homes in her city what is true about kira's data collection?

How many liters of peroxide should be added to 12 liters of an 8% peroxide solution so that the resulting solution contains 16% peroxide?   original added new amount of peroxide 0.96 liters x 0.96 + x amount of solution 12 liters x 12 + x 0.18 liter 1.14 liters 1.92 liters 2.10 liters