Matteläxa biffarnaa yumyum

                                                                           Biff nr 1

 

                                    V =  π x 5^2 x 12 / 3 = π x 5^2 x 4 = π x 100

                                                                              Biff nr 2

                                                               h / (h-12) = 15 / 10  

                                             (π x 15^2 x 36 / 3) - (π x 10^2 x 24 / 3)