The area of a circle is modeled by the equation, a= πr 2. rewrite the equation in terms of the circle’s radius, r. in your final answer, include all of your calculations.

step-by-step explanation:

ddd

you need to show us the graph.

step-by-step explanation:

1,589.63 in.^3

step-by-step explanation:

i hope this you : d

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional