Answer:
14,400
Step-by-step explanation:
I'm assuming this is multiplication so it would be 14,400
You can see if the other angles add up to 180 or 360 degrees (depending on shape) then add them to make it the number, for example, if a triangle has a right angle, then the other 2 angles are 45 degrees, knowing that EVERY triangle's angles add up to 180 degrees.
Yes
7x6=42
8x6=48
Hope that helped :D
you can measure the first angle with a protractor and then measure the other one see if there is a different angle

if you have already covered slopes, you could also get it that way, in fact is simpler that way.