helppp please

                                                 sides                  curved roof

Total area to be covered     2    x  2.4x 8     +    1/2 pi *3.6 *8 =    38.4    +    45.23 = 83.64 m²

Each roll is   20 x 1.8 =36 m²

  Rolls needed           83.64/36 =2.32 rolls    ~~3 rolls