X to power of 3 + 5 is how you would write it
44 is between 40 and 50 hope this helps.
(-:
Circumference of circular track, C = 0.5 miles = 0.5×5280 feet = 2640 feet.
We know, circumference in circle is given by :

( Here, r is radius i.e distance of centre from track )
Putting values in above equation :
2 × 3.14 × r = 2640
6.28 × r = 2640
r = 420.38 feet
Therefore, distance between centre and track is 420.38 feet .
Hence, this is the required solution.
To calculate the area you would do L*w=a² and that is how much ft of rug you will need