Class 9 RS Aggarwal Chapter-15 Volume and Surface Area of Solids Solutions - Free PDF Download
FAQs on RS Aggarwal Class 9 Solutions Chapter-15 Volume and Surface Area of Solids
1. What are the Essential Formulas Involved in Volume and Surface Area of Solids Class 9 RS Aggarwal Solutions?
Volume and Surface Area of Solids Class 9 involve several important formulas related to different solids. The major formulas involved in the chapter are as follows:
Total surface area of Cuboid = 2(lb+bh+hl)
Lateral surface area of cuboid = 2h(l+b)
The total surface area of cube = 6a2
The lateral surface area of cube = 4a2
The curved surface area of cylinder = 2πrh
Total surface area of cylinder = 2πr(r+h)
Slant height of cone: l2 = h2 + r2
The curved surface area of cone = πrl
Total surface area of right circular cone = πr(r+l)
The surface area of Sphere = 4πr2
The volume of cuboid = lbh
The volume of cube = a3
Volume of cylinder = πr2h
The volume of right circular cone = (1/3) πr2h
The volume of sphere = (4/3) πr3
2. What is the Weightage of RS Aggarwal Class 9 Maths Chapter 15 in the Final Examinations?
Surface area and Volume is a vital subpart of the unit Mensuration of Class 9th NCERT syllabus. According to the experts' analysis, the chapter requires 12 periods for the completion of all the involved concepts and is a vast one with several important concepts.
Mensuration carries a marks weightage of 13 marks out of 80 marks of the final examination papers.
3. What do you Understand by Surface Area and Volume? Write the Crucial Topics Involved in Chapter 15, Maths Class 9 RS Aggarwal.
Total Surface area refers to the sum of the areas of all the faces of a solid. Lateral surface area refers to the sum of areas of all the sides of a solid, excluding its top and base. The Volume of a solid is the capacity of it. It means the amount of space that the solid contains or is capable of holding.
The essential topics involved in Chapter 15 of RS Aggarwal Maths Class 9th are as follows:
Cubes and their surface area and Volume
Cuboid and its surface area and Volume
Surface area and Volume of cylinders
Surface area and Volume of cones
Surface area and Volume of spheres and hemispheres
Spherical shell
Right circular cone
4. Where are all the solution sets of Class 9 RS Aggarwal available?
The solution sets of Class 9 RS Aggarwal are available on the Vedantu website or app. Not only solution sets but also important questions, practice questions, revision notes, etc. are available. The best thing is, all these resources are available for free! Students just have to download them from the website or app. These are prepared by subject experts, so the notes are absolutely correct and reliable. These will be very helpful for the students in exams.
5. Why is the Class 9 RS Aggarwal book so important
Class 9 RS Aggarwal book is very important as it has detailed descriptions and explanations of all the concepts in each chapter, solved examples which will give students a better idea about their understanding of the chapter, and unsolved questions which will help the students understand whether they have actually understood all the concepts or not. By following this book, students will have a clear and concise idea about the chapters in the book.