Answer:
First 20, then 12.
Step-by-step explanation:
If you need to simplify it, you just need to divide 20 and 12 by 4: 5, then 3. Hope it makes sense?
Answer:
(6,7,8,8,9,11)
Step-by-step explanation:
Hopefully this helps:)
Answer:
640 dm
Step-by-step explanation:
200+40+400=640dm
The equation is

If you put in the numbers you get

This comes to 1056. So the answer is 1056 in^2