Because pi is a constant. It is the ratio between the circumference and diameter of any circle (assuming it is a perfect circle).
The functional relation between the diameter d and the area a is a = (pi)(d/2)2. Therefore, (pi)d2 = 22(25) = 100; d = sq rt (100/pi) = 5.6 units, to the justified number of significant digits.
Circumference of a circle = 2*pi*radius or pi*diameter
If you mean the diameter of a circle with area pi, then the diameter is 2. If you mean the diameter of a circle with circumference pi, then the diameter is 2. If you mean the diameter of a circle with diameter pi, then the diameter is pi. If you mean the diameter of a circle with radius pi, then the diameter is 2pi.
(pi) times the diameter of the circle=pi*d
By definition Pi is the relation between the radius and circumference of a circle.
In relation to the area of a circle: pi*radius^2
A circle's circumference when divided by its diameter is the value of pi which is an irrational number because it can't be exactly expressed as a fraction.
Circumference of a circle = 2*pi*radius or pi*diameter
The value of pi for any circle is the circle's circumference divided by its diameter.
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).
This is PI, pi = 3.14159265...... A circle is the round thing, like your pies! The area of a circle is measured using (Pi)(radius to the power of 2). Circumfrance of a circle is (Pi)(Diameter of circle).
Pi is the relationship between the diameter and the circumference of a circle.
It is pi, a letter in the Greek alphabet, and pronounced like pie. This infinite value, usually expressed as 3.14 or sometimes more accurately as 3.1416 is the ratio of the diameter (distance across) a circle, and the circumference (distance around) a circle. The diameter times pi equals the circumference, and the circumference divided by pi gives the diameter. Also, the radius (half the diameter) times itself and then multiplied by pi gives the area inside a circle. The value of pi is the same regardless of the size of a circle.
pi X diameter = circumference of the circle.
An arc is a part of the circumference of a circle.
yes, it is correct perimeter = d * pi pi is the ratio between the perimeter and the diameter