First - our basic formulas:
Circumference = 2 x Pi x Radius . . . . C = 2πr
Sphere Volume = 4/3 x Pi x Radius x Radius x Radius . . . . VS = 4πr3/3
Using our circumference of 85cm, we can solve for r as follows:
85 = 2πr
r = 85/2π
taking 3.14159 for Pi we get
r = 133.51757
Substituting 133.51757 into our volume equation we get:
VS = 4 x π x 133.517573/3
VS = 9,970,191.53253 cm3
If your instructor dislikes decimals, the solution looks like this:
VS = 4/3 x π x (85/2π)3
VS = 4/3 x π x 614,125 x π3/8
VS = 4/3 x 614125 x π4 /8
VS = 614,125π4/6
The value of pi is the relationship of a circunference to its diameter. For instance, if you have a circle whose circunference is 9.42477 cm, you shall have a diameter of 3 cm. Any measure of a circunference divided by its diameter shall generates the same numeric value, the pi number.
Zero. Nothing. Nada. For volume, you need 3 separate measurements, like 243cm by 150 cm by 85 cm. 243 cm is just a straight line.
Volume formula for a sphere is 4/3*π*r3 so volume of ball with radius of 4.6 cm is 4/3*3.14159*(4.6cm)3 = 407.72 cm3
Volume: 4/3*pi*4^3 = 268.083 cubic cm rounded to 3 decimal places
It works out as 2.580762042 or about 2.581 cm
The value of pi is the relationship of a circunference to its diameter. For instance, if you have a circle whose circunference is 9.42477 cm, you shall have a diameter of 3 cm. Any measure of a circunference divided by its diameter shall generates the same numeric value, the pi number.
If the volume of a ping pong ball is 2.045 in3, And the conversion of 2.045in3 to cm3 is equal to 33.5 cm3.So the volume of a ping pong ball in cm3 (Not cm... that's impossible...) is 33.5cm3!
Assuming the volume is in cubic cm and not cm(!), Density = Mass/Volume = 56g/28cm3 = 2 grams per cm3
Zero. Nothing. Nada. For volume, you need 3 separate measurements, like 243cm by 150 cm by 85 cm. 243 cm is just a straight line.
Volume formula for a sphere is 4/3*π*r3 so volume of ball with radius of 4.6 cm is 4/3*3.14159*(4.6cm)3 = 407.72 cm3
More than 92/93 cm of circunference is undesirable for men.
Volume: 4/3*pi*4^3 = 268.083 cubic cm rounded to 3 decimal places
It works out as 2.580762042 or about 2.581 cm
4, 6, and 12
A tennis ball must be between 6.25 and 6.57 cm in diameter, i.e. 3.125 and 3.285 cm radius. If we take 3.2 as the average than 137.258 cm
Volume = 4/3*pi*4.53 = 381.704 cubic cm rounded to 3 decimal places
density is mass over volume so its 6.57/45.2=0.145g/cm^3