18/25 = 72%
1/4 = 25%
5/1 = 500%
1/20 = 5%
37/100 = 37%
33/20 = 165%
(a) The perimeter of the shape is the sum of half a circumference and the diameter itself.
The circumference of a circle with radius
is
, and since
we can write the circumference as

So, half a circumference is

Ad we get the perimeter by addind the diameter:

(b) Given the perimeter, we can solve for
:

So, we can divide both sides by the parenthesis and we have

Answer:
2x + 1
Step-by-step explanation:

Answer:
1.9 is greater than 1.39 if that's what your asking?