Answer:166
Step-by-step explanation:
SA=2lw+2lh+2hw so 2*4*5+2*7*5+2*7*4
so 40+70+56=166
Communicative Property: (5+7) +3
Associative prop: (3+5) +7 or (3+7) +5
And the last one, I don’t fully understand what it is asking, but I believe it is asking for the answer which would be 15
3x6=18
6x2=12
The answer is 30 sqft
Just multiply all of the numbers and you'd get 483 cubic cm.
