Question

you can use 3.14 as an approximation for π. a = π·19² the area of the lid is about square cm.

Explanation:

Step1: Recall the formula for area of a circle

The formula for the area of a circle is $A = \pi r^{2}$, where $r$ is the radius. Given $A=\pi\times19^{2}$.

Step2: Substitute the value of $\pi$

We are told to use $\pi = 3.14$. So we calculate $A=3.14\times19^{2}$. First, $19^{2}=19\times19 = 361$.

Step3: Calculate the final area

Then $A = 3.14\times361= 1133.54$.

Answer:

$1133.54$