Calculating the volume of shapes is usually quite simple, especially when you use simple formulas for regular shapes like triangles, rectangles or circles. However, not all shapes can be classified under these formulas for calculating volume, and sometimes you will encounter these irregular shapes. To calculate the volume of an irregular shape, specifically a shape that can be immersed in water, you must calculate the displacement to find out the volume of your object.
Things You'll Need
- Graduated cylinder
- Irregular object
Fill a graduated cylinder with water to a certain level and make note of the level of the water. Generally speaking, fill the cylinder so that it is half or just under halfway filled with water. If you complete the experiment and the cylinder overflows, try again with a less water to accommodate for the size of the object.
Tie the string around the object and lower it into the cylinder until it is completely submersed.
Calculate the water displacement to determine the volume of the object. To do this, subtract the water level after the object was dropped in from the initial water level. So, if you lower an object into water that was resting at 10mL and it raises to 30 mL, the water was displaced by a total of 20 mL.
Convert the resulting displacement into a more appropriate unit of measurement; this is the volume of your object. To convert this number, you will have to know what unit is represented by 1 mL of water. The simplest conversion is to change milliliters into cubic centimenters; 1 mL is equal to 1 cm³. Therefore, if the water was displaced by 20 mL, the volume of the object is 20 cm³.
- Photo Credit Jupiterimages/Photos.com/Getty Images
How to Calculate Volume
You can calculate volume with an easy to use formula. The standard shapes such as a square or rectangle all use the...
How To Calculate The Area of an Irregular Shape
Whether you're a student studying geometry, a DIYer calculating carpet or paint needs or a crafter, sometimes you need to find the...
How Do You Find the Volume of an Object?
The volume of an object represents the space it takes up in a 3-D space, according to NASA. The concept of volume...
How to Calculate the Volume of a Shape
Many people finish their schooling and go on to work in jobs that never require the use of a single math formula....
How to Find the Volume of an Irregular Solid
Volume depends on the dimensions of an object, but can be difficult to calculate if your object is irregular. In this case,...
How to Estimate the Area of an Irregular Shape
Estimating the area of an irregular shape requires you to look closely at all the information you have been given. Estimate the...
Volume of a Geometric Cube
The volume of a geometric cube can be found using a very specific equation. Find the volume of a geometric cube with...
How Do I Calculate Capacity?
Formulas are used to calculate the capacity of an object. It is important in geometry, algebra and calculus to be able to...