ENEO LA MCHE DUARA-2

Tafuta eneo la mche duara ufuatao (umefungwa pande zote)

Suluhu

Eneo = 2∏rh + 2∏ x r²

=(2 x 22 x 35⁵ x 100) + (2 x 22 x 35⁵ x 35)

           7₁                                    7₁

=(2 x 22 x 5 x 100) + (2 x 22 x 5 x 35)

                                          

=(44 x 500) + (44 x 5 x 35)

=22000+ 7700

=29700

Hivyo eneo ni sm² 29700