Page 72 - Grade 10 C.Math

pbfx/0f 5
olb Pp6f cw{uf]nfsf] k'/f ;txsf] If]qkmn 462 ju{ ;]=ld= eP pSt cw{uf]nfsf] cfotg
lgsfNg'xf];\ .

;dfwfg

oxfF, cw{uf]nfsf] k'/f ;txsf] If]qkmn (TSA) = 462 ju{ ;]=ld=
Curriculum Development Centre
cw{uf]nfsf] cfotg (V) = ?

xfdLnfO{ yfxf 5,

cw{uf]nfsf] k'/f ;txsf] If]qkmn (TSA) = 3πr ju{ PsfO
2
3πr = 462 ju{ ;]=ld=
2

ju{ ;]=ld=

= 49 ju{ ;]=ld= = (7 ;]=ld=)
2

t;y{, cw{uf]nfsf] cw{Jof; (r) = 7 ;]=ld=

cw{uf]nfsf] cfotg 3g PsfO

3g ;]=ld=

3g ;]=ld=

 3g ;]=ld= = 718.66 3g ;]=ld=

cEof; 6.2

1. tn lbOPsf uf]nf / cw{uf]nfsf] ;txsf] If]qkmn / cfotg lgsfNg'xf];\ M
(a) (b) (c)

3.5 cm
14 cm
= 3.5

69 ul0ft, sIff – 10