Ugh I need help and yeah-

Four thousand nineteen hundred thousandths in standard form is 4900

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 !

5x + 6-7x + 86x + -9-7x + 2-3x + -54x+123x-6-2x+-86x+312x+20