1. Pizza Paradise delivers pizza in the local neighborhood using bicycles. The bike delivery person, Tommy, uses a bike whose wheels have a radius of 13 in. Tommy’s average biking speed is 15 mph. How many minutes would it take for Tommy to deliver a pizza to a house that is 4 mi away, and how many revolutions of his bike wheels would this take? (A revolution is one full wheel turn.) Use 3.14 to approximate pi. Round to the nearest whole number.

Respuesta :

we need to find circumference of wheele

C=2pir
r=13
C=2pi13
C=26pi
aprox pi=3.14
C=81.64 in


15 miles in 1 hour
4 miles in x hour
15/1=4/x
times x both sides
15x=4
divide 15 both sides
x=0.26666666 hour
times 60 mins
x=16 minutes


how many inches is 4 miles
1miles=5280 feet
1foot=12 inches
5280 tiems 12=63360 inches

circumferenc times number of rotations=63360
81.64 times number=62260
divide both sids by 81.64
number of rotations=776.09...
round
776 rotations



16 minutes and 776 rotations