Question

the diameter of a circle is 6 cm. find its area to the nearest whole number.

Explanation:

Step1: Find the radius

The radius \( r \) of a circle is half of the diameter \( d \). Given \( d = 6\) cm, so \( r=\frac{d}{2}=\frac{6}{2}=3\) cm.

Step2: Calculate the area

The formula for the area \( A \) of a circle is \( A=\pi r^{2}\). Substitute \( r = 3\) into the formula: \( A=\pi\times(3)^{2}=9\pi\). Using \(\pi\approx3.14\), we get \( A\approx9\times3.14 = 28.26\).

Answer:

\(28\)