Answer:
C)
Step-by-step explanation:
Group the similar terms together:
Add/subtract the "c" variables:
Add/subtract the "d" variables:
The answer is C) 3c-5d
If they were joined together, wouldn't the length of both squares combined be 20cm?
Therefore, it'd be (10+20+10+20) for the perimeter.
60cm.
-4.416
or
-4 5/12
-53/12
