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Answer:
In terms of Pi: km
Exact value (rounded): 15.42477 km
Approximated (3.14): 15.42 km
Step-by-step explanation:
Hello!
A semicircle's perimeter can be found using the formula:
We can plug in the values to solve for the perimeter.
<h3>Solve</h3>In terms of Pi, it is ,
Exact value of Pi, it is 15.42477
Approximation of Pi (3.14), it is = 15.42
Assuming all image points have the same symmetry about y=2, each point (x, y) has image (x, 4-y).
A' = (1, 4-1) = (1, 3)
B' = (-3, 4-0) = (-3, 4)
C' = (3, 4-4) = (3, 0)
D' = (-2, 4-(-1)) = (-2, 5)
A' = (1, 4-1) = (1, 3)
B' = (-3, 4-0) = (-3, 4)
C' = (3, 4-4) = (3, 0)
D' = (-2, 4-(-1)) = (-2, 5)