Not possible try "surface area"
To find the circumference of a 65 cm exercise ball, you can use the formula for circumference, which is ( C = \pi \times d ). First, convert the diameter from centimeters to inches (65 cm is approximately 25.6 inches). Then, calculate the circumference: ( C \approx 3.14 \times 25.6 ), which gives approximately 80.4 inches. Therefore, a 65 cm fully inflated exercise ball should have a circumference of about 80.4 inches.
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 circumference of a circular tablecloth can be calculated using the formula ( C = \pi \times d ), where ( d ) is the diameter. For a tablecloth with a diameter of 25 cm, the circumference is ( C = \pi \times 25 \approx 78.54 ) cm. Therefore, the circumference of the tablecloth is approximately 78.54 cm.
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.