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Area = pi*r2 = 64*pi so that r2 = 64 or r = 8
Then circumference = 2*pi*r = 16*pi
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What is the formula for finding circumference and area of a circle?
Circumference of a circle is (pi * diameter). Area of a circle is (pi * r2).
What is the relationship between the circumference of a circle and the area of a circle?
Area = (Circumference squared)/4 pi Circumference = 2 sqrt(Area times pi)
If the area of a circle is 16pi what is the circumference of the circle?
area = {pi}r2 = 16{pi} --> r2 = 16 --> r = 4 circumference = 2{pi}r = 2{pi}4 = 8{pi}
How do you find the area of a circle if the circumference is 10?
We know that the area of a circle is pi * r2. We also know that the circumference of a circle is pi * d. Therefore, when you know the circumference of a circle and want to know the area, divide the circumference by pi to give you the diameter of the circle, divide the diameter by 2 to give you the radius, square the radius and then multiply by pi to get the area. So, 10/pi = 3.183. 3.183/2 = 1.5915. 1.59152 = 2.533 2.533 * pi = 7.958 to 3 decimal places. The area of your circle is therefore 7.958cm2.
How do you find a diameter of a circle?
If you have the circumference: circumference = (pi) * diameter diameter = circumference / (pi) If you have the area: area = (pi) * radius * radius radius = square_root(area / pi) radius = diameter / 2 diameter = 2 * square_root(area / pi)
What is the circumference of a 64 mm diameter circle?
The circumference of the circle with a diameter of 64 mm is 64*pi = about 201 mm
How do you do circumference and area?
Circumference of a circle = 2*pi*radius or diameter*pi Area of a circle = pi*radius2
What is the formula for finding circumference and area of a circle?
Circumference of a circle is (pi * diameter). Area of a circle is (pi * r2).
How do you calculate circumference and area of pi?
Pi is the number of times the diameter of a circle will fit into the circumference. Pi is not a circle, and does not have a circumference or area. To calculate a circumference USING pi, the circumference is diameter * pi. To find the area using pi, area = pi * radius * radius
How do i find circumference and area of a circle?
Circumference of a circle = 2*pi*radius or diameter*pi Area of a circle = pi*radius squared
What is the circumference of a circle when area is 324cm square?
Radius of circle: square root of (324/pi) = 10.1554125 cm Circumference of circle: 2*pi*10.1554125 = 63.80833861 or 64 cm to the nearest integer
How is pi in relation to a circle?
Pi is related to the area and the circumference of the circle. The area is Pi multiplied by the radius of the circle squared and the circumference is Pi times the diameter of the circle. if you're wondering how it works, pi is the area of a circle with radius of 1 (unit), and the circumference of a circle with a radius of ½ (unit).
What is the area and circumference of 12 ft?
Area of a circle = pi*radius2 Circumference of a circle = 2*pi*radius or pi*diameter
What is the relationship between the circumference of a circle and the area of a circle?
Area = (Circumference squared)/4 pi Circumference = 2 sqrt(Area times pi)
What is the area of a circle with a circumference of 16pi?
Circumference = 16pi ie 2pi*r = 16pi so that r = 8 units Then area = pi*r2 = 64*pi square units.
If the circumference of a circle is 128 what is the raduis?
Circumference=2Pir so 64 is Pixr and the radius is 64/Pi
What is the formula for area and circumference of a circle?
The formula for the area of a circle is pi * radius squared. The circumference of a circle's formula is pi * diameter. NOTE: pi equals approx. 3.14
