Which number is written in scientific notation? 4.5 times 10 Superscript negative 3
14.5 times 10 Superscript 2
0.78 times 10 Superscript negative 6

Volume is length times width times height so
20 times 8 times 30 which is 4,800
surface area is ph (p is perimeter of base), h is height.
so perimeter would be length+length+width+width so 20+20+8+8 which is 56. so multiply 56 times 30 which is 1680. hope this !