<em>Answer:</em>
<em>C = 12.88</em>
<em>Step-by-step explanation:</em>
<em>If the radius of the circle is 4 cm, then the diameter of the circle is 4 cm x 2, or 8 cm. If you know the circumference of the circle, divide it by </em><em>π</em><em> to get the diameter.</em>
<em>C = π d = π · 4.1 = </em><em>12.88</em><em>053cm </em>
Glad to help ya!!
The square root of 25 is 5
Answer:
C. 
D. 
Step-by-step explanation:
C. 



D. 




Direct variation means their ratio is a constant
x/y is 9/45=1/5
so when x=2, y=5*2=10