a triangular prism is a solid figure with:
a) two parallel and equal triangular bases;
b) nine edges;
c) three rectangular or square faces; and
d) six vertices.
answer: 4.5 litres-by-step explanation: easy, u do 250ml times 18 then u get 4,500ml then u convert it to litres that means 4,500ml divide 1000 which u get 4.