Select the single most accurate method for measuring the volume of an irregularly shaped unknown object shown below.O Look up the density and measure the mass of the solid to calculate volume.O The volume of an irregularly shaped unknown solid cannot be determined.Place the solid in a graduated cylinder filled with water, measure the volume of the liquid before and afteraddition of the solid, and calculate the difference in volumes.O Measure the length and use the equation for a cube to calculate the volume.

The density of an object is the mass of the object present per unit of the volume. The units of density are g/mL, g/cm3, g/L, etc.The volume of an unknown object is calculated by simply putting the object in a graduated cylinder. For this, first, fill the cylinder with water up to a certain level. Measure that volume and note it down. Place this object in a cylinder. When we put this object in a cylinder, the level of the water rises. After adding the unknown, measure the volume of the water in a cylinder. Note down this volume and then find out the difference before and after the addition of the solid. It gives you the volume of that unknown. Hence, the "third option" is correct.You can calculate volume at that time when you know the material from which the given unknown is made. When you know the material, check its density value and measure that object on a weighing machine to obtain a volume. Hence, the first option is incorrect.You can determine the volume of unknown and it is not impossible. Hence, the second option is incorrect.If we measure the length of the unknown, the value is different for each time when we measure the length on each side for irregular shapes. Hence, the fourth option is incorrect.To find out the volume of irregularly shaped unknown, place the solid in a graduated cylinder filled with water. Measure the volume of the liquid before and after the addition of the solid, and calculate the difference in volumes. Hence, the "third option" is correct.