Anyone who answers all these questions I will give them an expert answer

42cm square

Step-by-step explanation:

Breadth of shaded=7-0.5-0.5=6

shaded=6×7=42

i cant explain well

3rd box is the answer

step-by-step explanation:

an advantage of the standard deviation is that it increases as the dispersion of the data increases. e. the interquartile range is preferred when the data are not skewed or no have outliers. an advantage of the standard deviation is that it uses all the observations in its computation.