Answer:
The coordinates of the vertices of triangle A'B'C' are
,
and
.
Step-by-step explanation:
According to this statement, triangle ABC must be translated 5 units in the -y direction to form triangle A'B'C'. We need to use the following operations:
(1)
(2)
(3)
If we know that
,
and
, then the new vertices of the rectangle are, respectively:
,
, 
The answer is 20!
you need to change the subtraction sign to an addition sign and change -4 to a 4. then, solve!
hope this helps!!
To find the circumfance you need to do...
2 *

*7 (14/2 is 7. Radius is half of diameter)
So your final answer would be.