tolong pakai cara plizzzz bantu dong!!!!!!

volume = 1/2 x 8 x 7 x 20
             = 80 x 7
             = 560 cm3

V = La × T

= (A × T ÷ 2) × T

= (8 × 7 ÷ 2) × 20

= (4 × 7) × 20

= 28 × 20

= 560 (b)