Njoo Ufanye Hesabu

[Ambiele Kiviele]

Nipeni Majibu wadau

 

[lucida]

Nipeni Majibu wadau

4.πd +ur×up

 

[20PROFF]

Soln ya e

Hapo kun pentagona ambayo jumla ya nyuzi ni 540,

Each angle ina nyuzi 108.

Ukichukua 108 + (2e - 86) = 180

2e + 22 = 180
2e = 180 - 22
2e = 158 gawanya kwa 2

e = 79

 

[Hossam]

La pili: 200 x 2 ongeza 22/7 x 56 yaani 400 ongeza 176