30 pi m
50.27 yards
tell what the diameter (d) and radius(r) of each circle is by using this information
The circumference of a circle if its radius is 13cm is: 81.68 cm
Diameter = Circumfrence/pi = 13/pi = 4.14 cm (approx)
30 pi m
Radius = about 13cm Diameter = about 26cm
50.27 yards
tell what the diameter (d) and radius(r) of each circle is by using this information
The circumference of a circle if its radius is 13cm is: 81.68 cm
Circumference of the circle: 2*pi*5 = 10*pi m
Diameter = Circumfrence/pi = 13/pi = 4.14 cm (approx)
26
The formula for the circumference (C) of a circle is C = 2πr where r is the radius. But, the diameter (D) of a circle is twice the radius so this formula can be written C = πD. C = π x 13 = 40.841 cm (3dp)
The cord of a circle that contains the center of that circle is a diameter of that circle.
You do a diameter circle!!
If you know the diameter or the radius then it's 2 times Pi times the radius or pi times the diameter. Pi is an irrational number usually shown as the Greek letter Pi (two upright strokes and one horizontal over the top) and is very approximately 22 divided by 7 or 3.14159