8.10^3 is how many times as large as 4.10^2

Apark is in the shape of a rectangle. the park authorities are planning to build a 2-meter-wide jogging path in the park (shown as the shaded region in the image). what is the area of the jogging path? plz

Select the number of ways in which a line and a circle can intersect

700 miles the train takes 5 hours to a travel the distance at what unit rate is the train traveling?