Not possible try "surface area"
30 inches diameter or 93 inches circumference
If that's the diameter, you can multiply that by pi (which is approximately 3.14), to get the circumference.
The circumference of a 55 centimeter ball is: 172.8 cm(c = d x Pi)
The ball is about 11 inches (28 cm) long and about 22 inches (56 cm) in circumference at the center.
The circumference of a circle that has an area of 25 centimeters squared is about 17.72 cm
Roughly 22 cm (8.65 inches) in diameter for a regulation size 5 ball. Rules state that a size 5 ball must be 68 to 70 cm in circumference. Averaging that to 69 cm and then dividing by pi gives about 22 cm for a diameter.
it is usually between 7.75 and 8 inches (19-20 cm) in circumference (about 2.5 inches (6.5 cm) in diameter)
The diameter is 25/pi cm = 7.96 cm
Circumference = π x DiameterC= 3.14159 x 14C= 43.98 cm
circumference = 5*pi = 15.70796327 or 15.708 cm rounded to 3 d.p.
25 pi or about 78.54
27 cm (11 in) long and 60 cm (24 in) in circumference