Ch 13 (Introduction) Surface Areas and Volumes | Ncert Maths Class 9 | Cbse

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CUBOID
LSA = 2h(l+b)
TSA = 2(lb+bh+hl)
VOLUME = l×b×h
CUBE
LSA = 4a²
TSA = 6a²
VOLUME = a³
CYLINDER
CSA = 2πrh
TSA = 2πr(r+h)
VOLUME = πr²h
CONE
CSA = πrl
TSA = πr(l+r)
VOLUME = 1/3πr²h
SPHERE
SA = 4πr²
VOLUME = 4/3πr³
HEMISPHERE
CSA = 2πr²
TSA = 3πr²
VOLUME = 2/3πr³
Isme mehnat lagi h like kr do
👇👇

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I studied this same material last year also but I couldn't understood what is Lateral and what is Total Surface Area but you explained in very nice
Best Teacher
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In five faces cuboid we can also write it as
2 (hl+hb)+lb.
???????

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[@uhn3]

CUBOID
LSA = 2h(l+b)
TSA = 2(lb+bh+hl)
VOLUME = l×b×h
CUBE
LSA = 4a²
TSA = 6a²
VOLUME = a³
CYLINDER
CSA = 2πrh
TSA = 2πr(r+h)
VOLUME = πr²h
CONE
CSA = πrl
TSA = πr(l+r)
VOLUME = 1/3πr²h
SPHERE
SA = 4πr²
VOLUME = 4/3πr³
HEMISPHERE
CSA = 2πr²
TSA = 3πr²
VOLUME = 2/3πr³

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?????

[@androidgamer9978]

CUBOID
LSA = 2h(l+b)
TSA = 2(lb+bh+hl)
VOLUME = l×b×h
CUBE
LSA = 4a²
TSA = 6a²
VOLUME = a³
CYLINDER
CSA = 2πrh
TSA = 2πr(r+h)
VOLUME = πr²h
CONE
CSA = πrl
TSA = πr(l+r)
VOLUME = 1/3πr²h
SPHERE
SA = 4πr²
VOLUME = 4/3πr³
HEMISPHERE
CSA = 2πr²
TSA = 3πr²
VOLUME = 2/3πr³
Isme mehnat lagi h like kr do
👇👇

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❤

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