A radius of 22 means a circumference of: 44(pi)
22 cm
3.503 feet
Circumference = (pi) x (diameter) = (pi) x (2 x radius) = 44 pi = 138.23 (rounded)
c = 22"
A radius of 22 means a circumference of: 44(pi)
The radius is 3.5
Radius = 22/2pi m
Circumference of the circle is 22 units. Circumference of the circle is 2*3.14(pi)*r S0, 2*3.14*r=22 r= 22/6.28 units.
22/3.1416=diameter /2
22 cm
3.503 feet
Circumference = 2 x π x radius ⇒ radius = circumference ÷ (2 x π) So divide the circumference by 2 x π ~= 2 x 3.14 = 6.28 ⇒ radius = 22 inches ÷ 6.28 ~= 3.5 inches. As an approximation to π (the ratio between a circle's circumference and its diameter), the value 22/7 is sometimes used (to 2 decimal places 22/7 = 3.14 & π = 3.14). The circumference given as 22 inches suggests this approximation should be used: 22 ÷ (2 x 22/7) = 22 x 7/22 ÷ 2 = 7 ÷ 2 = 3.5
Circumference = (pi) x (diameter) = (pi) x (2 x radius) = 44 pi = 138.23 (rounded)
circumference = 2*pi*3.5 = 21.99114858 or 22 to the nearset unit.
A circle with a radius of 22 inches has a circumference of 138.23 inches.
c = 22"