Knowing that the formula to find the area of a circle is
* Ac = πr2 We must first find the radius of the circle with this formula:
* Rc = d/2 So dividing the diameter by two we get a radius of 20 feet.
* 20' = 40'/2 Now that the radius is found, we can plug it in and fine the exact answer needed:
* Ac = π(20ft)2 * Ac = π(400ft2) We find that the exact answer is 400πft2.
However if you want to calculate out the the value by multiplying out π the answer would change from 400πft2 to approximately 1256ft2. π = pi
π ≈ 3.14
About 40 feet. Circumference = 3.14 x diameter
If the table is a circle and the perimeter is 40 feet, then the diameter (rounded to 2 decimal places) would be 12.74 circumference = diameter x pi so, diameter = circumference / pi
area = pi x diameter squared/4 = 400 pi diameter squared = 4 x 400 x pi/pi = 1600 diameter = sqrt 1600 = 40
This cannot be properly answered because a 20 cm radius equates to a 40 cm diameter. Also, a 50 cm diameter means a 25 cm radius.
20 millimeters
Area of circle: pi times radius squared
Area = pi*202 = 1256.637 square feet to 3 d.p.
If the diameter of a circle is 40 m then the area (in terms of Pi) is: about 400pi m2
A ≈ 1,256.64
Area of circle: pi*(20/12)^2 = 8.727 square feet rounded to 3 decimal places
Oh, dude, you're hitting me with some math here! So, the area of a circle is π times the radius squared. If the diameter is 40 feet, the radius is 20 feet. Plug that into the formula, and you get an area of 400π square feet. But who's really counting, right?
The circumference of a circle can be found using the formula C = πd, where C is the circumference and d is the diameter. In this case, the diameter is 40 feet. So, the circumference would be C = π(40) = 40π feet, or approximately 125.66 feet.
Using 3.14 as Pi the area of circle is: 1256.0
Diameter = 2 * radius So in this case, 40 feet.
1256.64 square feet
The circumference of a circle can be calculated using the formula C = πd, where C is the circumference, π is a constant approximately equal to 3.14159, and d is the diameter of the circle. Given a diameter of 40 feet, we can plug this value into the formula to find the circumference: C = π(40) = 3.14159(40) = 125.6636 feet. Therefore, the circumference of a circle with a diameter of 40 feet is approximately 125.66 feet.
40'