What is the approximate circumference of a circle that has a radius of 90? Use 3.14 for π and express your answer to the tenths place.(1 point)

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1 answer

To find the circumference \( C \) of a circle with a radius \( r \), you can use the formula:

\[ C = 2 \pi r \]

Given that the radius \( r \) is 90 and using \( \pi \approx 3.14 \):

\[ C = 2 \times 3.14 \times 90 \]

Now, calculate it step-by-step:

  1. Calculate \( 2 \times 3.14 \): \[ 2 \times 3.14 = 6.28 \]

  2. Now, multiply by the radius: \[ 6.28 \times 90 = 565.2 \]

So, the approximate circumference of the circle is 565.2.