Volume of 1 block = Length × Breadth × Height. Multiply by 5 for 5 blocks.<br><br>&bull; Volume of 1 block = 8 × 6 × 4.5<br>&bull; 8 × 6 = 48; 48 × 4.5 = 216 cm&sup3;<br>&bull; Total volume = 5 × 216 = 1080 cm&sup3;<br>&bull; 1080 ÷ 1000 = 1 remainder 80<br>&bull; 1 l 80 ml<br><br>Final Answer: 1 l 80 ml