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NCERT Solutions for Class 9 Maths Chapter 11 Exercise 11.4 Surface Areas and Volumes - PDF Download

JEE Mains & Advanced

NCERT solutions for class 9 maths chapter 11 ex 11.4 Surface areas and Volumes describes the volume of a sphere. The amount of space occupied within the sphere is known as the volume of the sphere. Hemisphere is the exact half of the sphere. If you cut a sphere in half along its center, you get two equal hemispheres. 

Class 9 maths chapter 11 exercise 11.4 NCERT solutions includes 10 questions related to sphere and hemisphere volume. These questions in NCERT solutions have been solved by experienced maths experts considering the understanding and grasping capabilities of the students. Ex 11.4 class 9 maths solutions are made available on eSaral website in PDF format. You can download these free PDFs from our website and practice questions anytime.

Topics Covered in Exercise 11.4 Class 9 Mathematics Questions

Ex 11.4 class 9 maths chapter 11 NCERT solutions is primarily concerned with the concept of the volume of the sphere. 


Volume of a Sphere


Volume of a Hemisphere

  1. Volume of a Sphere 

                   Volume of a Sphere = 4/3r3,     where r is the radius of the sphere.

  1. Volume of a Hemisphere

                  Volume of a Hemisphere = 2/3r3,  where r is the radius of the hemisphere

Tips for Solving Exercise 11.4 Class 9 Chapter 11 Surface Areas and Volumes

Our maths experts have provided you with some important mathematical tips to the questions in ex 11.4. You can check them below.

  1. The questions in this exercise are based on the concept of finding the sphere’s volume. Students are encouraged to practice the questions in this exercise because it helps them to understand the concepts better and they will perform well in the exam.

  2. Students can gain a clear understanding of the sequence of questions to be asked in the exam if they utilize the solutions provided in class 9 maths ex 11.4.

  3. NCERT solutions for class 9 maths chapter 11 exercise 11.4 provides students with a straightforward approach to calculating the volume of a sphere and hemisphere, allowing them to progress through the problem solving process step by step.

Importance of Solving Ex 11.4 Class 9 Maths Chapter 11 Surface Areas and Volumes

Here's a list of benefits that students get while solving the NCERT solutions with eSaral.

  1. Each question of ex 11.4 is answered in a more straightforward and easy-to-understand way so that students can understand the concepts clearly.

  2. NCERT class 9 maths solutions are available in PDF format for students to download for free and use effectively offline.

  3. To help students prepare for exams, Our subject experts provide a comprehensive list of topics and important questions.

  4. NCERT solutions for questions of ex 11.4 provided by eSaral, Improves your speed in answering problems.

Frequently Asked Questions

Question 1. Write the volume of the hemisphere?

Answer 1. The volume of a Hemisphere = 2/3r3

Question 2. How many faces are there in a sphere?

Answer 2. There is only one face in a sphere.

Question 3. Write the volume of the sphere?

Answer 3.  The volume of a sphere = 4/3r3



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