Page 79 - Grade 10 C.Math

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-3_ o;sf cGo ;txx¿ (lateral surface) cfwf/df nDa / cfotfsf/ xG5g .
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-ª_ o;sf] cfotg cfwf/sf] If]qkmn / prfOsf] u'0fg kmn x'G5 . cyf{t\ lk|Hdsf]
cfotg (V) = lk|Hdsf] cfwf/sf] If]qkmn x 7f8f] prfO

cyjf, V = A x h

oxfF lqe'hfsf/ cfwf/ ePsf] lk|Hd;Fu ;DalGwt ;d:ofx¿ dfq cWoog ul/G5 .
Curriculum Development Centre

(a) lk|Hdsf] ;txsf] If]qkmn (Surface area of a prism)

lj|mofsnfk

Pp6f cfoftfsf/ sfuh lng'xf];\ / lrqdf
b]vfP h:t} u/L lqe'hfsf/ lk|Hd agfpg'xf];\ .
o;/L sfuhnfO{ k6\ofP/ lqe'hfsf/ lk|Hd
alg;s]kl5 lgDg ljz]iftfx¿sf af/]df
5nkmn ug'{xf];\ M

lk|Hdsf] hfnL
lk|Hdsf ljz]iftfx¿
a
1. b'O{ cf]6f ljk/Lt 5]psf ;txx¿ cg'¿k x'G5g\ . C B
b c
2. b'O{ cf]6f ljk/Lt 5]psf ;txx¿ ;dfgfGt/ x'G5g\ .
A
F
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3. 5psf ;tx;u ;dfgfGt/ xg u/L larsf sg klg efunfO {
F
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sf6bf cfpg jm; ;S;g (cross sec on) klg 5psf ;tx¿;u

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;dfgfGt/ / cg¿k g xG5g .
C' B'
4. s'g} lk|Hdsf] cfotg (V) = cfwf/sf] If]qkmn x prfO x'G5 .
lgDg lnlvt k|Zgx¿df 5nkmn ug'{xf];\ M A'
1. lrqdf b'O{ cf]6f ljk/Lt 5]psf ;tx¿ s'g sg' x'g\ <
2. b'O{ cf]6f ljk/Lt 5]psf ;tx afx]ssf ;txx¿nfO{ s] elgG5 <
3. lk|Hddsf b'O{ cf]6f ljk/Lt 5]psf lqe'hx¿sf] If]qkmn lgsfNg k|of]u ug{ ;lsg] ltg
cf]6f ;"qx¿ s] s] x'g\ <
4. lqe'hfsf/ lk|Hddf 58\s] ;tx slt cf]6f x'G5g\ < ltgLx¿sf] ;txsf] If]qkmn lgsfNg
s'g ;"q k|of]u ug{ ;lsG5 <
5. j|m; ;]S;g (cross-sec on) eGgfn] s] a'lemG5, n]Vg'xf];\ .

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