# How to Calculate the Volume of a Cylinder

No matter the size, you can use the same simple formula to determine the volume of a cylinder.

### Instructions

• Step 1: Write down the dimension Write the height and diameter of the cylinder on a piece of paper.
• TIP: If you have a diameter measurement, divide the diameter by 2 to get the length the radius.
• Step 2: Square the radius Square the radius, or the distance from the center of the base to the outside edge.
• Step 3: Multiply the product Multiply the product of the radius squared by pi. This will give you the area of the base of the cylinder.
• TIP: Use 3.14 to represent pi if you don't have a scientific calculator.
• Step 4: Multiply the base by the height Multiply this number by the height of the cylinder to determine the volume.
• Step 5: Write the product in cubic units Write the product as a measure of cubic units.
• Step 6: Work backwards to check your solution Work backwards to check your solution. Use the formula "volume equals pi times radius squared times height" for future calculations.
• FACT: The most definitive and influential book written about geometry was written by Euclid, a Greek mathematician during the third century BCE.

### You Will Need

• Dimensions of a cylinder
• Paper
• Pencil
• Scientific calculator (optional)