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For a circle, sphere and cylinder calculator click here.
For a right circular cone calculator click here.
Circle Formulas
Circumference = 2 •
π
• radius
=
π
• diameter
Circle Area =
π
• r²
= ¼ •
π
• d²
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Sphere Formulas
Sphere Surface Area =
4 •
π
• r²
=
π
• d²
Sphere Volume = 4/3
•
π
• r³
=
(
π
•d³)/6
Click here or here for partially-filled sphere calculators.
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Cylinder Formulas
Surface Area = (2 •
π
• r²) +
(2 • π
• r • height)
Where
(2 • π
• r²)
is the surface area of the "ends" and (2 • π • r • height) is the lateral area (the area of the "side").
Volume =
π
• r² • height
=
¼ •
π
• d² • height
If you need a cylinder calculator click here.
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Cone Formulas
Surface Area = π
• r • slant height +
π
• r²
Where (π • r • slant height) is the lateral area and (π
• r²) is the base area
Volume = ( π
• r² • height ) ÷ 3
If you need a right circular cone calculator, please click here
RETURN TO CIRCLE SPHERE CYLINDER CALCULATOR
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