Explanation:
Hey there!
The volume of an object: The volume of a water displaced by the object.
So, at first we need to find the volume of a water displaced by the object.
On the first figure the initial volume of a water is 60.5ml . Similarly, in second figure when an object is immersed then its volume is 90ml.
Now, volume of a water displaced =?
We have;
Displaced volume = final volume - initial volume.
Or, displaced volume = (90 - 60.5) ml.
= 29.5ml.
As per the condition, volume of a water displaced by the object = volume of an object.
Therefore, the volume of an object is 29.5ml.
Hope it helps...