Question

the diameter of a steel train wheel is 65 cm. what is the circumference of the wheel to 2 decimal places?

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

Given that the diameter \( d = 65\) cm and we use \( \pi\approx3.1416 \). So, \( C=\pi\times65 \).
Calculating this, we get \( C = 3.1416\times65 = 204.204\approx204.23 \) (rounded to two decimal places).

Answer:

204.23 cm