Page 88 - Grade 10 C.Math

k'/f ;txsf] If]qkmn (T.S.A) = (a + 2al) ju{ PsfO
2
T.S.A = a( a +2l) ju{ PsfO

pbfx/0f 1

Pp6f ju{ cfwf/ ePsf] lk/fld8sf] cfwf/sf] e'hfsf] nDafO (a) = 6 ;]=ld= / 58\s] prfO
(l) = 5 ;]=ld= 5 eg] pSt lk/fld8sf] k'/f ;txsf] If]qkmn lgsfNg'xf];\ .
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;dfwfg
P
oxfF cfwf/sf] e'hf (a) = 6 ;]=ld=
58\s] prfO (l) = 5 ;]=ld=
A D
k'/f ;txsf] If]qkmn (T.S.A.) = ?

;"qcg';f/,
O
k'/f ;txsf] If]qkmn = a(a + 2l) ju{ PsfO

= 6( 6 + 2 x 5) ju{ ;]=ld= C
B
= 6( 6 + 10) ju{ ;]=ld=

= 6(16) ju{ ;]=ld=

= 96 ju{ ;]=ld=

pbfx/0f 2

;Fu}sf] lk/fld8sf] lrqdf cfwf/sf] ju{sf] e'hfsf] nDafO (a) = 8 ;]=ld= / lk/fld8sf] 7f8f] prfO
(h) = 3 ;]=ld= lbOPsf] 5 . pSt lk/fld8sf] k'/f ;txsf] If]qkmn lgsfNg'xf];\ .

;dfwfg
oxfF cfwf/sf] e'hf (a) = 8 ;]=ld= P

lk/fld8sf] prfO (h) = 3 ;]=ld=
h = 3 ;]=ld=
58\s] prfO (l) = ?

k'/f ;txsf] If]qkmn (T.S.A.) = ? A D

lrqdf OM = PsfO
O M
OM = x 8 ;]=ld=
B C
= 4 ;]=ld= 8 ;]=ld=
prfO (OP) = 3 ;]=ld=

85 ul0ft, sIff – 10