Page 100 - Grade 10 C.Math

pbfx/0f 4

Pp6f l;d]G6sf] rSsfsf] Jof; 3.5 lkm6 / prfO 1 lkm6 5 . Ogf/ agfpFbf k|lt rSsfsf] nfut d"No
?= 1200 k5{ . olb 32 rSsfsf] Pp6f Ogf/ tof/ ug'{ 5 eg] pSt Ogf/sf] nfut vr{
lgsfNg'xf];\ . ;fy} pSt Ogf/sf] 18 rSsf;Dd kfgL 5 eg] Ogf/sf] vfnL 7fpF / kfgLsf] cfotg
slt x'G5 < kTtf nufpg'xf];\ .
Curriculum Development Centre
;dfwfg

oxfF Ogf/df /flvPsf] rSsfsf] Jof; (d) = 3.5 lkm6

prfO (h ) = 1 lkm6
1
k|lt rSsf Ogf/df /fv]afktsf] d"No = ?= 1200

s'n nfut vr{ (T.C) = 32 x 1200 = ?= 38400

Ogf/sf] vfnL 7fpFsf] cfotg (V ) = r h
2
1
= 3glkm6

3glkm6
= 134.75 3glkm6

kfgLsf] cfotg (V ) 3glkm6 = 173.25 3glkm6
2

cEof; 7.3

1.(a) leqL nDafO 3 ld6/ / prfO 2 ld6/ ePsf] juf{sf/ cfwf/sf] Pp6f 6\ofª\sLdf
slt kfgL c6fpF5 <
(b) ju{ cfwf/ ePsf] kfgL 6\ofª\sLsf] leqL nDafO / prfO j|mdzM 2.5 ld6/ / 1.5 ld6/ eP
;f] kfgL 6\ofª\sLdf slt kfgL c6fpF5 <
2.(a) Pp6f Ogf/df 3.5 lkm6 Jof; ePsf] tyf prfO 1 lkm6sf 50 cf]6f rSsf /flvPsf 5g\ .
olb ;f] Ogf/ agfpg k|ltrSsf vr{ ?= 1300 k5{ eg] pSt Ogf/ vGg slt vr{ nfU5 < pSt

Ogf/df clwstd slt kfgL c6fpF5, lgsfNg'xf];\ .
(b) Pp6f Ogf/sf] leqL Jof; 1 ld6/ / prfO 16.5 ld6/ 5 eg] ;f] Ogf/df slt ln6/ kfgL
c6fpF5 <
(c) ulx/fO 8.5 ld6/ / Jof; 1.4 ld6/ ePsf] s'g} Ogf/df slt kfgL c6fpF5 xf]nf < kTtf
nufpg'xf];\ .

97 ul0ft, sIff – 10