Question

the diameter of a circle is 12 feet. what is the circles circumference?
d=12 ft
round your answer to the nearest hundredth.
feet
submit
work it out

Explanation:

Step1: Recall the formula for the circumference of a circle

The formula for the circumference \( C \) of a circle when the diameter \( d \) is known is \( C=\pi d \).

Step2: Substitute the given diameter into the formula

We are given that the diameter \( d = 12 \) feet. Substituting this into the formula, we get \( C=\pi\times12 \).

Step3: Calculate the value and round to the nearest hundredth

Using the approximation \( \pi\approx3.14159 \), we have \( C = 12\times3.14159=37.69908 \). Rounding this to the nearest hundredth (two decimal places), we look at the third decimal place which is 9. Since \( 9\geq5 \), we round up the second decimal place. So \( 37.69908\approx37.70 \).

Answer:

\( 37.70 \)