Class 9 Maths | Chapter 13 | Introduction | Surface Areas And Volumes | NCERT

In this session I will be giving an introduction of chapter "Surface Areas And Volumes".

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[akshit]

Time Stamp
00:00 Introduction
00:25 Surface Area
03:59 Volume
04:53 Shape: Cube
06:35 Shape: Cuboid
10:20 Shape: Right Circular Cylinder
12:30 Shape: Hollow Right Circular Cylinder
15:47 Shape: Right Circular Cone
18:43 Shape: Sphere
19:28 Shape: Hemisphere
20:51 Outro
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Cube
CSA=4a²
TSA=6a²
Volume=a³....
Cuboid
CSA=2h(l+b)
TSA=2(lb+bh+hl)
Volume=lbh...
Cylinder
CSA=2πrh
TSA=2πr(h+r)
Volume=πr²h...
Cone
CSA=πrl
TSA=πr(l+r)
Volume=⅓/πr²h
Slant height=√r²+h²...
Sphere
TSA=4πr²
Volume=4/3πr³...
Hemisphere
CSA=2πr²
TSA=3πr²
Volume=⅔πr³




thank you for 100+ likes ☺☺😎😎

[anegaming]

All the best guys for Final Exams hope you all success

[Sidd]

I wish all students will success in their half yearly exam 😁🙏

[NamanJain]

The efforts she is putting for the students is just incredible
She understands student like no one even the school teachers don't understands us that way
Being in the screen still so interactive
HATS OFF TO

[aashinparvin]

All the best guys for final exams hope you all success ❤️

[tusharsahu]

Time Stamp
00:00 Introduction
00:25 Surface Area
03:59 Volume
04:53 Shape: Cube
06:35 Shape: Cuboid
10:20 Shape: Right Circular Cylinder
12:30 Shape: Hollow Right Circular Cylinder
15:47 Shape: Right Circular Cone
18:43 Shape: Sphere
19:28 Shape: Hemisphere
20:51 Outro

[Focusedflame_]

10:56 ma'am the formula for the volume of right circular cylinder would be

(pi × r² × h)

[ved_upadhyay]

Aapke Karan mera maths ka aaj ka paper bahut hi mast gaya. Thanks mam 😁

[Epic-Gaming]

In new NCERT book (2023-24) cube, cuboid, right circular cylinder and hollow right circular cylinder are deleted.
15:44

[ARYAN-vipl]

Cube
CSA=4a²
TSA=6a²
Volume=a³....
Cuboid
CSA=2h(l+b)
TSA=2(lb+bh+hl)
Volume=lbh...
Cylinder
CSA=2πrh
TSA=2πr(h+r)
Volume=πr²h...
Cone
CSA=πrl
TSA=πr(l+r)
Volume=⅓/πr²h
Slant height=√r²+h²...
Sphere
TSA=4πr²
Volume=4/3πr³...
Hemisphere
CSA=2πr²
TSA=3πr²
Volume=⅔πr³

[gembarnes]

Timestamps✨
0:00 Intro
0:29 Surface area
2:01 Lateral Surface area (L.S.A. = C.S.A.{Curved surface area}
2:51 Total Surface area
3:04 Difference b/w Area and Surface area
3:21 Area
3:29 Volume
4:52 Cube
6:34 Cuboid
10:19 Right circular cylinder
12:29 Hollow right circular cylinder
15:46 Right circular cone
18:42 Sphere
19:26 Hemi-Sphere
20:49 Outro


Best of luck with whatever you do<3 GO GET THAT SHAWTY! I'm with you XD ✌

[Sidd]

I wish all students will success in their half yearly exam 😁🙏😊

[Sivanshu_zone_]

Who is weak in math he is watching in March 🤣🤣

[legend_yuvraj__]

All the best every one for your final exam 👍👍

[manasamokashi]

Thank you mam for ur wonderful explanation and from tomorrow we have final exams and I saw ur video of this chapter and I have created all my doubts thank you mam thank you so much

[vloggingkiduniya]

Mam you explain better😌than my school teacher I understand all your concept thank you mam

[ridamirza]

Woah i just started this chapter for term 2 and she uploaded it today, thank you maam

[suneelgupta-wi]

I wish all students will success in annual exam👍👍

[carenshibu]

Tommorow is my final exam and am only starting to study this chapter.. and there is lot of excercise to study i am not sure if i will be able to complete this whole chapter today... 🥲

[adithrays]

the volume of the cylender 12:20 is stated wrong, it should be pi * rsquare* h