Question

practice
driver’s delight has 3 circular go - cart tracks.
track 1 has a radius of 60 feet. track 2 has a
radius of 85 feet. track 3 has a radius of
110 feet. use 3.14 for π and round to the
nearest hundredth.

type the answer in each space provided. use numbers instead of

words.
use 3.14 for π and round to the nearest hundredth.
a. compute the circumference of track 1.
approximately □ feet
b. compute the circumference of track 2.

Explanation:

Part a

Step1: Recall circumference formula

The formula for the circumference \( C \) of a circle is \( C = 2\pi r \), where \( r \) is the radius.

Step2: Substitute values for Track 1

For Track 1, \( r = 60 \) feet and \( \pi = 3.14 \). Substitute into the formula: \( C = 2\times3.14\times60 \)

Step3: Calculate the result

First, calculate \( 2\times3.14 = 6.28 \), then \( 6.28\times60 = 376.8 \)

Step1: Recall circumference formula

The formula for the circumference \( C \) of a circle is \( C = 2\pi r \), where \( r \) is the radius.

Step2: Substitute values for Track 2

For Track 2, \( r = 85 \) feet and \( \pi = 3.14 \). Substitute into the formula: \( C = 2\times3.14\times85 \)

Step3: Calculate the result

First, calculate \( 2\times3.14 = 6.28 \), then \( 6.28\times85 = 533.8 \)

Answer:

376.80

Part b