Acircle has a diameter of 4 meters. what is the best approximation of its area? use 3. 14 to approximate for pie

12.56m^2

Step-by-step explanation:

The formula for the area of a circle is Pi * r^2.

Since we know the diameter of the circle is 4, we can say that the radius is 2. The radius is always half the diameter.

Pi is approx 3.14, so we now have 3.14 * 2^2.

2^2 is 4.

3.14 * 4 is 12.56m^2

12.56m^2

$5.41

step-by-step explanation:

$20 - $14.51 = $5.49.

pi x^2

step-by-step explanation:

pi times x squared