1. In the figure two semicircles are drawn at the centre of the large semicircle as shown in the figure . A fine dot is placed into the figure without looking
into it.
a) If the radius of the smaller semicircle is taken as 'r', What will be the
radius of the larger semicircle ?
b) What is the probability of being the dot inside the shaded semicircles ?
c) What is the probability of being the dot outside the shaded semicircles ?
2.A point was marked in the picture below, without looking assuming the radius of the circle is I unit
What is the probability that it is
a. with in the square.
b. outside the square
I need answers with explanation plz fast

Farmers know that driving heavy equipment on wet soil compresses the soil and injures future crops. here are data on the "penetrability" of the same type of soil at two levels of compression. penetrability is a measure of how much resistance plant roots will meet when they try to grow through the soil. compressed soil 2.85 2.66 3 2.82 2.76 2.81 2.78 3.08 2.94 2.86 3.08 2.82 2.78 2.98 3.00 2.78 2.96 2.90 3.18 3.16 intermediate soil 3.17 3.37 3.1 3.40 3.38 3.14 3.18 3.26 2.96 3.02 3.54 3.36 3.18 3.12 3.86 2.92 3.46 3.44 3.62 4.26 use the data, omitting the high outlier, to give a 95% confidence interval for the decrease in penetrability of compressed soil relative to intermediate soil. compute degrees of freedom using the conservative method. interval: to