tykxedk;Zizf'k{k.kiqLrd

{ks=QyrFkkvk;rudhx-kukdjusgsrqdqNmi;ksxhQkWewZys 229
3-leyEcprqHkqZt
a
✔
✔ ✔✔✔✔✔
✔
✔ ✔✔✔✔✔
✔
✔ ✔✔✔✔✔
leyEcprqHkqZt
4-ledks.kf=Hkqt
5-o`Rr
6-vk;ru
7-ik;Fkkxksjl izes;
b
❚
❚❚❚❚❚❚
❚ ❚
❚❚❚❚❚
❚ ❚
❚❚❚❚❚
✻
❄
h
{ks=Qy =lekukUrjHkqtkvksadkvkSlr
×mudschpdhnwjh
1
= × (a + b) × h
2
{ks=Qy = 1
×vk/kkj ×ÅapkbZ
2
= 1
× b × h
2
o`Rrdk{ks=Qy = 22
7
= 22
7
× (f=T;k (radius))2
× r2
o`Rrdhifjf/k = 2 × 22
7 ×f=T;k
vk;ru =ØWkllsD'kudk{ks=Qy ×yEckbZ
= 2 × 22
7
× r
fdlhHkh ledks.k f=Hkqtds