Area is radius *radius * pi
4 cm*4cm * pi
16 pi cm^2
16.45 is less than 16.454, Because 16.45 doesnt have a extra # at the end of the #, Add the pretend 0 to 16.45 and compare 0 to 4, And 4 is greater than 0
To find the unit rate, divide total miles by number of gallons:
418 miles / 16 gallons = 26.125 miles per gallon
Round the answer as needed.
Attached pictures shows the answers in RED.