Question

question
the diameter of a circle is 25 cm. find the circumference to the nearest tenth.
answer attempt 1 out of 2
c = cm submit answer

Explanation:

Step1: Recall the formula for the circumference of a circle

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

Step2: Substitute the given diameter into the formula

Given \(d = 25\) cm. So \(C=\pi\times25\).
Using \(\pi\approx3.14159\), then \(C = 3.14159\times25=78.53975\) cm.

Step3: Round to the nearest tenth

Rounding \(78.53975\) to the nearest tenth. The digit in the hundredth place is \(3\lt5\), so we keep the digit in the tenth place as it is.

Answer:

\(78.5\) cm