Page 84 - Grade 10 C.Math

;]=ld
 ;]=ld= = 5 ;]=ld=

 ;dsf]0f lqe'hsf] If]qkmn = x cfwf/ x prfO -nDa_ ju{ PsfO

= ( x 12 x 5) ju{ ;]=ld= = 30 ju{ ;]=ld=
Curriculum Development Centre
xfdLnfO{ yfxf 5, lk|Hdsf] k'/f ;txsf] If]qkmn = cfwf/sf b'O{ lqe'hsf] If]qkmn + pl
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lk|Hdsf] k'/f ;txsf] If]qkmn = 660 ju ;]=ld= -hxf p = kl/ldlt / l = lkHdsf nDafO_
 b'O{ cf]6f lqe'hsf] If]qkmn + pl = 660 ju{ ;]=ld=
2 x 30 + (5 + 12 + 13) x h = 660 ;]=ld=
60 + 30h = 660

cyjf 30 h = (660 - 60)

 h=

 h = 20 ;]=ld=

pbfx/0f 5

Pp6f lk|Hdsf] nDafO (l) = 12 ;]=ld=, To;sf] cfwf/sf] lqe'hsf e'hfx¿sf] gfk 6 ;]=ld=, 6
;]=ld= / 8 ;]=ld= 5 . ;f] lk|Hdsf] cfotg / k'/f ;txsf] If]qkmn lgsfNg'xf];\ .

;dfwfg
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oxf l = 12 ;=ld=, a = c = 6 ;=ld= / b = 8 ;=ld= k/f ;txsf Ifqkmn (T.S.A.) = ? / cfotg (V) = ?
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;dlåafx' lqe'hsf] If]qkmn
= 17.88 ju{ ;]=ld=
;dlåafx' lqe'hsf] If]qkmn = 17.88 ju{ ;]=ld=
58\s] ;txsf] If]qkmn = lqe'hsf] kl/ldlt x lk|Hdsf] nDafO
= pl = (6 + 6 + 8) x 12 ju{ ;]=ld= = 240 ju{ ;]=ld=

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t;y lkHddsf k/f ;txsf Ifqkmn (T.S.A) = 2 cf6f lqehsf Ifqkmn + 58s ;txsf Ifqkmn
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= (2 x 17.88 + 240) ju ;=ld= = 275.76 ju ;=ld=
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cfotg (V) = cfwf/sf] If]qkmn x nDafO
= (17.88 x 12) 3g ;]=ld= = 214.56 3g ;]=ld=
81 ul0ft, sIff – 10