Question

enter the correct answer.
calculate the area of the circle.
formula: a = πr²
use 3.14 for pi.
26 cm
a = ? cm²
round to the nearest tenth.

Explanation:

Step1: Find the radius

The diameter \(d = 26\) cm. The radius \(r=\frac{d}{2}\), so \(r=\frac{26}{2}=13\) cm.

Step2: Calculate the area

Use the formula \(A=\pi r^{2}\). Substitute \(\pi = 3.14\) and \(r = 13\). Then \(A=3.14\times13^{2}\). First, \(13^{2}=169\). Then \(A = 3.14\times169\). \(3.14\times169=(3 + 0.14)\times169=3\times169+0.14\times169=507+23.66 = 530.66\approx530.7\)

Answer:

\(530.7\)