Question

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

Explanation:

Step1: Substitute the radius into the formula

Given \( r = 16\) cm and \( \pi=3.14\), substitute into \(A=\pi r^{2}\). So \(A = 3.14\times16^{2}\).

Step2: Calculate \(16^{2}\)

\(16^{2}=16\times16 = 256\). Then the formula becomes \(A=3.14\times256\).

Step3: Perform the multiplication

\(3.14\times256=(3 + 0.14)\times256=3\times256+0.14\times256=768+35.84 = 803.84\).

Answer:

\(803.8\)