Units & Dimensions- VOLUME

Units & Dimensions - VOLUME
VOLUME OF REGULAR OBJECTS
Volume is the amount of space an object occupies while density is the mass of an object per unit volume. You need to know the volume of an object before you can calculate its density. Calculating volume for regular objects can be done with a simple formula determined by the shape of the object. Common units for volume are cubic centimetres (cm³), cubic meters (m³), cubic inches (in³), and cubic feet (ft³). Once you have the volume, density is one more simple calculation away. Common units for density are grams per cubic centimetre (g/cm³) or grams per millilitre (g/mL).
Calculating the Volume of Regular Object:
1.Determine the shape of object:    
Knowing the shape of an object allows you to choose the proper formula and make the necessary measurements to calculate the volume.
A sphere is a perfectly round three-dimensional object, in which every point on the surface is an equal distance from the centre. In other words, a sphere is a ball-shaped object.
A cylinder is a three-dimensional shape that has two identical flat ends that are circular in shape, and a single curved side that connects them.
A cube is a three-dimensional shape that has six identical square faces.
A rectangular solid, also known as a rectangular prism or cuboid, is similar to a cube in that it is a three-dimensional shape with six sides, but in this case, the sides are rectangular instead of square.
2.Choose the correct equation to calculate volume:
Each shape has its own formula that calculates how much three-dimensional space that object occupies. Below are the formulas for the objects Sphere, cylinder, cube& cuboid.