Surface Areas and Volumes - NCERT Solutions of Exercise 13.2 | Class 10 Maths Chapter 13 2022-23

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✅ In this video,

✔️ Class: 10th
✔️ Subject: Maths
✔️ Chapter: Surface Areas And Volumes (Chapter 13)
✔️ Topic Name: Surface Areas and Volumes - NCERT Solutions of Exercise 13.2
✔️ Topics Covered in This Video (By Gaurav Sir): Solutions of NCERT Exercise 13.2 Surface Areas and Volumes
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00:00 Introduction: Surface Areas And Volumes
03:28 Exercise 13.2: Question - 1 to 8: Surface Areas And Volumes
Que. 1 A solid is in the shape of a cone standing on a hemisphere with both their radii being equal to 1 cm and the height of the cone is equal to its radius. Find the volume of the solid in terms of π.
02:06:53 Website Overview
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[PRAJAL]

Formula by meeee:)
1.)CUBE
~Total Surface Area=6a²
~Curved Surface Area=4a²
~Volume=a³

2.)Cuboid
~Total Surface Area=2(lb+bh+hl)
~Curved Surface Area=2h(l+b)
~Volume=L×B×H

3.)CYLINDER
~Total Surface Area=2πr(h+r)
~Curved Surface Area=2πrh
~Volume=πr²h

4.)CONE
~Total Surface Area=πr(l+r)
~Curved Surface Area=πrl
~Volume=1/3πr²h

5.)SPHERE
~Total Surface Area=4πr²
~Curved Surface Area=Nahi hota bhai Sphere ka C.S.A🫂❤
~Volume=4/3πr³

6.)HEMISPHERE
~Total Surface Area=3πr²
~Curved Surface Area=2πr²
~Volume=2/3πr³

7.)FRUSTUM OF CONE
~Total Surface Area=πl(r+R)+r(r²+R²)
~Curved Surface Area=2πl(r+R)
~Volume=1/3πh(r²+R²+rh)
OR
IF SLANT HEIGHT IS NOT GIVEN-
Slant Height = h²-(R-r)²
Bhai yeh pura under root ke andar hain...
Slant height ke bath kar raha hoon..
Dattebayo🦊Thnx me later🐼
Abh top marenge..

[ff.tanmoy]

1:42:18 there is a minor mistake in multiplication, the final answer is 892.2624 kg .

[Shweta_Saraf_]

Sir 7th question mein calculation error hai. You didnt notice. After you multiply you will get 792 and not 794 please check

[aryaaryapal]

Sir app bauth accha solution batha e hai ❤❤❤❤😊😊🎉🎉❤

[jatinjangid]

sir small mistake at 1:11:42 divide 44 by 3 we get 14.67 but you write 13.67

[Rajjstudies]

At 1:13:18 there is a mistake in answer. Your answer is 523.63 but in book it is 523.53 cm

[bairagijagadala]

Sir in question no.4 you have mistake in calculation 44/3=13.666... but correct answer is 14.666....

[pratishthathakur]

No one can teach better than you. Thank you so much 😊

[mausam]

Thanku so much. ...sir 🙌one of the best work of magnet brains...nd no need to coaching when magnet brains is teaching ....!🙌🙌🙅

[syedazehramahmood]

At 1:52:49 there's a minor mistake, we get 7920000 on multiplying 22/7×36×10000, not 7940000.

[pujasubba]

Sir question no.6 total mass=111532.8×8=892262.4 hoga answer, apka k sai, answer itna 892259.4 aiya sir😢😢

[Mahadev....]

Aap bahut Achcha bahut Achcha experience dete Ho

[muskanKumari-ngxd]

Sir questions no 3 mai volume of cylinder ka h to likhe par solve nahi kiye waha par samjh nahi aya h

[adhyatiwari]

Thank you so much sir 😊😊😊superb explanation👏👏😇😇😇😊😊😊🤗🤗👼💟💟

[sameeksha]

Relly sir your teaching skills osm and ican easily understand and i have easily clear my doute thank u so much for best teaching 👌👌👌👌👌👌👌👌👌👌

[Prince-kqhz]

Thank you magnet brain for providing this level of education 🔥🔥

[Hindu]

Thankyou sir you are the best teacher in maths because you are explaining in detail by step by step. Heads of youu to sir. Every question is fit in my mind . But you pray God that is will pass the maths in board exam.🤗🤗😇

[Monikangkanahazarika]

Apka explanation bohot atcha Thank you soo much 😊

[krishna]

sir your explanation is best comparetivly to the other magnet brains maths teachers sir you are best

[ParoRawat-nh]

Thanks sir mujhe bahut problem hoti thi maths me pr aapake solution se mujh me bahut improvement hua h