NCERT Solutions for Class 9 Maths Chapter 13 Surface Areas and Volumes (Ex 13.4) Exercise 13.4
Free PDF download of NCERT Solutions for Class 9 Maths Chapter 13 Exercise 13.4 (Ex 13.4) and all chapter exercises at one place prepared by expert teacher as per NCERT (CBSE) books guidelines. Class 9 Maths Chapter 13 Surface Areas and Volumes Exercise 13.4 Questions with Solutions to help you to revise complete Syllabus and Score More marks. Register and get all NCERT Solutions in your emails. You can also download NCERT Solutions Class 9 Maths to help you to revise complete syllabus and score more marks in your examinations. Students can also avail of NCERT Solutions for Class 9 Science from our website.
List of Topics Covered Under NCERT Solutions for Class 9 Maths Chapter 13 Surface Areas and Volume
Important Formulas Covered Under Class 9 Maths Chapter 13 Surface Areas and Volume
The surface area of a cuboid = 2 (lb+bh+lh)
The surface area of a cube = 6a2
Curved surface area of a cylinder = 2rh
Total surface area of a cylinder = 2r(r+h)
Curved surface area of a cone = rl
Total surface area of a right circular cone = r (l+r) or rl +r2
Surface area of a sphere of radius r = 4r2
Curved surface area of a hemisphere = 2r2
Total surface area of a hemisphere = 3r2
Volume of cuboid = l*b*h
Volume of cube = a3
Volume of cylinder = r2h
Volume of cone = 1/3(r2h)
Volume of a Sphere = 4/3(r3)
Volume of a Hemisphere = 2/3(r3)
NCERT Solutions for Class 9 Maths Chapter 13 Exercise 13.4
FAQs on NCERT Solutions for Class 9 Maths Chapter 13 Exercise 13.4
Q1. What is meant by the term ‘surface area’?
Ans: The surface area of any solid or 3D shape can be defined as the sum of the areas of all its sides. It gives a measure of the area that a 3D figure occupies. There is a list of formulas that are commonly used to calculate the surface areas of 3D shapes, in maths. For example, there is a particular formula for calculating the surface area of a cube, whereas there is another formula for calculating the surface area of a sphere, and so on. Also, there are two types of surface areas for some 3D shapes, namely lateral surface area and total surface area.
Q2. What is meant by the ‘volume’ of a 3D shape?
Ans: The volume of a 3D shape or solid is the amount of space occupied by it. The volume of a 3D shape also gives the measure of the matter enclosed within the boundaries of the solid. If we measure the volume of a hollow or empty object, we can get the total volume of air or water that it can hold. Volume can be found only for 3-dimensional objects and nor for 2D objects, such as square or rectangle. In Maths, there are separate formulas to calculate the volume of various 3D objects. For example, the formula to find the volume of a cube is different from the formula to find the volume of a cuboid.
Q3. How many sums are there in the NCERT Solutions for Class 9 Maths Chapter 13 Surface Areas and Volumes, exercise 13.4?
Ans: There are a total of 9 sums in the NCERT Solutions for Class 9 Maths Chapter 13 Surface Areas and Volumes, exercise 13.4. Most of the sums in this exercise are based on the concept of surface areas and volumes of spheres and cylinders. When you refer to the solutions of these sums, you will be able to understand that you will have to write statements for solving these sums. All the 9 sums are solved and explained step by step in these NCERT solutions for Surface Areas and Volumes, exercise 13.4.
Q4. Are the NCERT Solutions for Class 9 Maths Chapter 13 Surface Areas and Volumes (Ex 13.4) Exercise 13.4 helpful?
Ans: Yes, the NCERT Solutions for Class 9 Maths Chapter 13 Surface Areas and Volumes (Ex 13.4) Exercise 13.4 are very helpful for the exam preparation. These solutions are prepared by the highly experienced faculty at Vedantu, in a step by step manner. Thereby, these stepwise NCERT solutions will guide you to comprehend the concepts of Surface Areas and Volumes for various solid shapes. Therefore, these solutions make a self-explanatory study resource for practice and revision purposes for your exam preparation. Also, you can download these NCERT Solutions for free from our website as well as from our mobile application.
Q5. Where can I find the NCERT Solutions to Class 9 Maths Chapter 13 Exercise 13.4?
Ans: NCERT Solutions to Class 9 Maths Chapter 13 Exercise 13.4 are available on Vedantu. You can download NCERT Solutions for Class 9 Maths Chapter 13 Exercise 13.4 PDF free of cost. These NCERT Solutions are available in PDF format on the website as well as on the mobile app of Vedantu. It has helped thousands of students in their learning path and is continuing to do so. These solutions are created by highly experienced faculty and are explained in an easy-to-understand stepwise manner.
Q6. Is Class 9 Maths Chapter 13 considered the toughest chapter?
Ans: No, not really, Chapter 13 of Class 9 Maths may be tricky so it requires good practice to understand the concepts covered in this chapter. If you practice regularly and with proper concentration then it will not be a tough chapter. Even if you don’t get the answer on your first try, solve it again, and eventually, you will be able to get the correct answer. You can verify your solutions from the link NCERT Solutions for Class 9 Maths Chapter 13 Exercise 13.4.
Q7. Can I seek help in solving the sums of Chapter 13 Exercise 13.4 from the experts at Vedantu?
Ans: Yes, our experts at Vedantu are always ready to make learning easy for you. They try to help you out as soon as possible when you reach out with any doubt. Our subject experts are highly professional and have years of teaching experience. Each expert has a wide knowledge of the specific subject. They will address your doubts and explain the sums to you. So you may post your doubt or get in contact with our experts for guidance in Chapter 13 Exercise 13.4.
Q8. What makes Vedantu’s NCERT Solutions for Class 9 Maths Chapter 13 Exercise 13.4 more reliable than other platforms?
Ans: Vedantu is one such platform that has a wholesome amount of brand value. It has been working for the best of students' interests and tries to update its platform as per the current education requirement. Queries are easily resolved without any barrier. The content is curated as per the latest format of CBSE. By applying the easy tricks and tips of problem-solving, students can solve the sums in Exercise 13.4 smoothly. Hence, you can download the PDF of NCERT Solutions of Class 9 Maths Chapter 13 Ex-13.4 from the Vedantu app or website.
Q9. Can I prepare for Class 9 in one month?
Ans: The time required for exam preparation entirely depends on the speed and accuracy of students. For some, one month can be a shorter period while for some it can be long enough. But the sooner the better, so it is advisable, to begin with the chapter as early as you can.