Question

question
the diameter of a circle is 14 m. find its area to the nearest tenth.
answer attempt 1 out of 3
a = m² submit answer

Explanation:

Step1: Find the radius

The radius \( r \) of a circle is half of the diameter \( d \). Given \( d = 14\space m \), so \( r=\frac{d}{2}=\frac{14}{2}=7\space m \).

Step2: Use the area formula

The area formula of a circle is \( A=\pi r^{2} \). Substitute \( r = 7\) into the formula: \( A=\pi\times(7)^{2}=\pi\times49\). Using \( \pi\approx3.14 \), we get \( A = 3.14\times49=153.86\space m^{2}\). Rounding \( 153.86\) to the nearest tenth gives \( 153.9\space m^{2}\).

Answer:

\(153.9\)