Page 89 - Grade 10 C.Math

58\s] prfO (l) =  PsfO

=  ;]=ld=

=  ;]=ld=

= ;]=ld= = 5 ;]=ld=
Curriculum Development Centre
k'/f ;txsf] If]qkmn (T.S.A) = a(a + 2l) ju{ PsfO
= 8(8 + 2 x 5) ju{ ;]=ld=

= 8(8 + 10) ju{ ;]=ld=

= 8 x 18 ju{ ;]=ld=

= 144 ju{ ;]=ld=

pbfx/0f 3
cfwf/ e'hf / prfO lbPsf] cj:yfdf lbOPsf] ju{ cfwf/ ePsf] lk/fld8sf] k'/f ;txsf] If]qkmn
slt x'G5 < kTtf nufpg'xf];\ .

;dfwfg
P
oxfF cfwf/sf] e'hf = a -dfgf}F_

OM = x a

kfOyfuf]/; ;fWocg';f/

58\s] prfO (l)

A D
h

M
O

l
B C
a
58\s] ;txsf] If]qkmn = rf/ cf]6f lqe'hsf] If]qkmn

= 4( x a x l)
= 2al

86 ul0ft, sIff – 10