What is the area of a circle with a radius of 2.1 miles? Estimate the area to the hundredths place using 3.14 for π
.(1 point)
square miles
The formula to calculate the area of a circle is: A = πr², where A is the area and r is the radius.
Plugging in the given radius of 2.1 miles and using 3.14 as an estimate for π, we can calculate the area as follows:
A = 3.14 * (2.1)²
A = 3.14 * 4.41
A ≈ 13.8334
Rounded to the hundredths place, the estimated area of the circle is 13.83 square miles.
To find the area of a circle, you can use the formula: A = πr^2, where A represents the area and r represents the radius.
Given that the radius of the circle is 2.1 miles and using the approximation of π as 3.14, we can calculate the area as follows:
A = 3.14 * (2.1)^2
≈ 3.14 * 4.41
≈ 13.8414
Rounding to the hundredths place, the estimated area of the circle is approximately 13.84 square miles.
To find the area of a circle, you need to use the formula:
A = π * r^2
where A is the area, π (pi) is a mathematical constant approximately equal to 3.14, and r is the radius of the circle.
In this case, the radius of the circle is given as 2.1 miles. Plugging this value into the formula, we have:
A = 3.14 * (2.1)^2
Simplifying the equation, we get:
A = 3.14 * 4.41
Multiplying these two numbers together, we find:
A ≈ 13.8474
Rounding to the hundredths place, we get:
A ≈ 13.85 square miles
So, the estimated area of a circle with a radius of 2.1 miles, using 3.14 for π, is approximately 13.85 square miles.