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.

Question

Mathematics

Maverick Marks

8 September, 07:56

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.

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Answers (1)

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Lucas Fox · Answer 1

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