Estimate Values of Expressions with Pi Practice

Question

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Question
What is the circumference of a circle with a radius of 3 feet? Estimate the circumference to the hundredths place using 3.14 for π
.(1 point)
feet
Remaining Attempts : 3

Answer 1

To estimate the circumference of a circle, you can use the formula:

\[ C = 2\pi r \]

where \( C \) is the circumference, \( r \) is the radius, and \( \pi \) is approximately 3.14.

Given that the radius \( r \) is 3 feet, we can substitute this value into the formula:

\[ C = 2 \times 3.14 \times 3 \]

Calculating that step-by-step:

1. Calculate \( 2 \times 3.14 = 6.28 \)
2. Now multiply that by 3: \[ 6.28 \times 3 = 18.84 \]

Therefore, the estimated circumference of the circle is 18.84 feet.