Here we have listed Class 9 maths chapter 13 exercise 13.8 solutions in PDF that is prepared by Kota’s top IITian’s Faculties by keeping Simplicity in mind.

If you want to score high in your class 9 Maths Exam then it is very important for you to have a good knowledge of all the important topics, so to learn and practice those topics you can use eSaral NCERT Solutions.

In this article, we have listed NCERT Solutions for Class 9 Maths chapter 13 Exercise 13.8 that you can download to start your preparations anytime.

So, without wasting more time Let’s start.

**Download The PDF of NCERT Solutions for Class 9 Maths chapter 13 Exercise 13.8 “Surface Areas and Volumes”**

So, that’s all from this article. I hope you enjoyed this post. If you found this article helpful then please share it with other students.

#### All Questions of Chapter 13 Exercise 13.8

Once you complete the chapter 13 then you can revise Ex. 13.8 by solving following questions

Q1. Find the volume of a sphere whose radius is

(i) $7 \mathrm{~cm}$

(ii) $0.63 \mathrm{~m}$

Q2. (i) Find the amount of water displaced by a solid spherical ball of diameter 28 cm.

Q3. The diameter of a metallic ball is $4.2 \mathrm{~cm}$. What is the mass of the ball, if the density of the metal is $8.9 \mathrm{~g}$ per $\mathrm{cm}^{3}$ ?

Q4. The diameter of the moon is approximately one-fourth the diameter of the earth. What fraction of the volume of the earth is the volume of the moon?

Q5. How many Iitres of milk can a hemispherical bowl of diameter 10.5 cm hold?

Q6. A hemispherical tank is made up of an iron sheet 1 cm thick. If the inner radius is 1 m, then find the volume of the iron used to make the tank.

Q7. Find the volume of a sphere whose surface area is $154 \mathrm{~cm} ^ {2} $.

Q8. A dome of a building is in the form of a hemisphere. From inside, it was white washed at the cost of Rs. 498.96. if the cost of white washing is Rs. $2.00$ per square metre, find the

(i) Inside surface area of the dome,

(ii) Volume of the air inside the dome.

Q9. Twenty seven solid iron spheres, each of radius $\mathrm{r}$ and surface area $\mathrm{S}$ are melted to form a sphere with surface area $\mathrm{S}^{\prime} $. Find the

(i) radius $\mathrm{r}^{\prime}$ of the new sphere,

(ii) ratio of $\mathrm{S}$ and $\mathrm{S}$ ‘.

Q10. A capsule of medicine is in the shape of a sphere of diameter $3.5 \mathrm{~mm}$. How much medicine (in $\mathrm{mm}^{3}$ ) is needed to fill this capsule?

Also Read,

NCERT Class 9 Maths Book PDF

NCERT Class 9 Maths Exemplar PDF

Complete Solutions for Class 9 Maths chapter 13 PDF

Download Class 9 Maths Chapter 12 Exercise 12.1 Solutions PDF

Download Class 9 Maths Chapter 12 Exercise 12.2 Solutions PDF

If you have any Confusion related to NCERT Solutions for Class 9 Maths chapter 13 Exercise 13.8 then feel free to ask in the comments section down below.

To watch Free Learning Videos on Class 9 by Kota’s top Faculties Install the eSaral App