Questions: Use your equation to find the approximate area of the disk.
You can use 3.14 as an approximation for π.
A = π * 18^2
The area of the disk is about square cm.
Transcript text: Use your equation to find the approximate area of the disk.
You can use 3.14 as an approximation for $\pi$.
\[
A=\pi \cdot 18^{2}
\]
The area of the disk is about
$\square$ square cm.
Solution
Solution Steps
Step 1: Calculate the square of the radius
The radius is given as 18 cm. The square of the radius is 182=18∗18=324.
Step 2: Multiply by pi
The formula for the area of a circle is A=πr2. We are given an approximation of π≈3.14. So, the area is approximately 3.14∗324.