The first one is 2.78% second one is 3.8% third one is 4.5% and it will be 378
8 would be the best answer to the question.
Answer:
1. Should stay the same since you can't combine any further
2. 6x²-6x+16
Answer:
432
Step-by-step explanation:
Volume of cuboid:
12 x 4.5 x 5.5 = 297
volume of traingular prism:
(12x5)/2 x 4.5 =135
add them together:
135+297 =432
hope this helps!
