What is circumference. pls somebody

Regarding mathematics, circumference is the distance around a circle, or curved shape. Its formula is πd or pi · d (pi/π is approximately 3.14, by the way). Mathisfun is a good source to look at for more elaboration. It basically reflects my explanation :)!

45.36 feet per second

step-by-step explanation:

tyrone travels 30 miles in 58.2 minutes.  

1 mile = 5280 feet; this means he travels

30(5280) = 158400 feet in 58.2 minutes.

1 minute = 60 seconds; this means he travels 158400 feet in

58.2(60) = 3492 seconds.

this gives us the unit rate of

158400/3492 = 45.36 feet per second.