Page 74 - Grade 10 C.Math

6.3 ;+o'St 7f]; (Compound Solid)

oxfF a]ngfdfly cw{uf]nf /flvPsf] Pp6f ;+o'St 7f]; j:t' lbOPsf] 5 . To;sf] cWoog u/L
lgDg k|Zgx¿sf] pTt/ n]Vg'xf];\ M

1. a]ngfsf] dfq ;txsf] If]qkmn slt x'G5 < r
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2. cw{uf]nfsf] dfq ;txsf] If]qkmn slt x'G5 <
3. ;+o'St 7f];sf] ;txsf] If]qkmn slt x'G5 <
h
4. cw{uf]nfsf] cfotg slt x'G5 <

5. a]ngfsf] cfotg slt x'G5 <
r
6. o; ;+o'St 7f];sf] cfotg slt x'G5 <

dflysf k|Zgx¿ af/] cWoog u/L pTt/ n]lv;s]kl5 tn lbOPsf pbfx/0fx¿ cWoog ug'{xf];\ .

pbfx/0f 1

lbOPsf] ;+o'St 7f]; j:t'sf] ;txsf] If]qkmn / cfotg lgsfNg'xf];\\ .

;dfwfg
oxfF, cw{uf]nfsf] cw{Jof; = (22-15) ;]=ld= = 7 ;]=ld=

a]ngfsf] cfwf/sf] cw{Jof; = 7 ;]=ld=

;+o'St 7f]; j:t'sf] ;txsf] If]qkmn (T.S.A.) = ?
;+o'St 7f]; j:t'sf] cfotg (V) = ?

;+o'St 7f];sf] k'/f ;txsf] If]qkmn (T.S.A.)
22 ;]= ld=
2
2
=2πr + 2πrh + πr ju{ PsfO
= πr(2r + 2h + r)
ju{ ;]=ld=
r = ?
= 22(14 + 30 + 7) ju{ ;]=ld=
= 22 × 51 ju{ ;]=ld= = 1122 ju{ ;]= ld=
ca, a]ngf / cw{uf]nfsf] ;+o'St cfotg (V) = cw{uf]nfsf] cfotg + a]ngfsf] cfotg

3g PsfO

3g ;]=ld=

71 ul0ft, sIff – 10