The diameter of a circle is 18 miles. What is the circle's area?
Use 3.14 for βπ.
The radius of the circle is half of the diameter, so it is 9 miles.
To find the area of a circle, we use the formula A = πrΒ² where A is the area and r is the radius.
Substituting the values we have:
A = 3.14 x 9Β²
A = 3.14 x 81
A = 254.34
Therefore, the area of the circle is approximately 254.34 square miles.
To find the area of a circle, you can use the formula:
Area = π x (radius)^2
Given that the diameter of the circle is 18 miles, we can find the radius by dividing the diameter by 2:
Radius = Diameter / 2
Radius = 18 miles / 2
Radius = 9 miles
Now, we can substitute the radius into the formula for the area:
Area = 3.14 x (9 miles)^2
Area = 3.14 x 81 square miles
Area β 254.34 square miles
Therefore, the area of the circle is approximately 254.34 square miles.