Find the area and circumference of a circle of the diameter is 10ft?(use 3.14 pi as its value).
If the diameter is 10 ft, then the radius r is 5 ft
You have 2 formulas:
Area of a circle = π r^2
Circumference = 2π r
sub in your r = 5 and evaluate
To find the area and circumference of a circle, we need to use the formulas:
1. Area of a circle = π * r^2
2. Circumference of a circle = 2 * π * r
Given that the diameter of the circle is 10ft, we can find the radius by dividing the diameter by 2:
Radius (r) = 10ft / 2 = 5ft
Let's calculate the area and circumference using the given value for pi:
1. Area of the circle:
Area = π * r^2 = 3.14 * 5^2 = 3.14 * 25 = 78.5 square feet
2. Circumference of the circle:
Circumference = 2 * π * r = 2 * 3.14 * 5 = 31.4 feet
Therefore, the area of the circle is 78.5 square feet and the circumference is 31.4 feet.
To find the area and circumference of a circle, you need to use the formulas:
Area = π * r^2
Circumference = 2 * π * r
Given that the diameter of the circle is 10ft, you can find the radius by dividing the diameter by 2:
Radius (r) = Diameter / 2 = 10ft / 2 = 5ft
Now we can calculate the area and circumference using the values of radius and π = 3.14:
Area = π * r^2 = 3.14 * 5^2 = 3.14 * 25 = 78.5 square feet
Circumference = 2 * π * r = 2 * 3.14 * 5 = 31.4 feet
Therefore, the area of the circle is 78.5 square feet and the circumference is 31.4 feet.