 Hi and welcome to the session. I am Deepika here. Let's discuss the question Find the approximate change in the volume V of a cube of side x meters caused by increasing the side by 1% So let's start the solution Let V be the volume of a cube Therefore V is equal to x cube Because x is the side of a cube Therefore V by dx is equal to 3x cube Now it is given that percentage increase inside is 1% this implies Delta x is equal to 1% of x That is 1 over 100 into x and this is equal to 0.01 x that is delta x is equal to 0.01 x Let delta V Be the approximate change in the volume V Therefore delta V is equal to dV by dx Into delta x and this is equal to 3x cube Into delta x is 0.01 x and this is equal to 0.03 x cube meter cube hence the Approximate change in the volume V of a cube of side x meters caused by increasing the side by 1% is 0.03 x cube meter cube and this is our answer. I Hope the question is clear to you. Bye and take care