I need help with this geometry problem.
find the perimeter of the semi-circle

c

Step-by-step explanation:

Circumference entire circle woule be d·π, with diameter d=5m.

Now we only have half of that, and we must add the straight line that closes the figure.

perimeter = 5·π/2 + 5 ≈ 12.85

To solve which ordered pair lie on the graph of the given function f(x) = 128(0.5^2)

You mus substitute each ordered pair then check if it satisfy the given function

(0,1)

1 = 128(0.5^0)

1 = 128 so wrong

(1, 64)

64 = 128(0.5^1)

64 = 64 correct

(3, 16)

16 = 128(0.5^3)

16 = 16 correct

0.5 = 128(0.5^8)

0.5 = 0.5 correct