Given
coordinates of center= (0,9)
Circle passes through (0, 27/2)
Find
Equation of circle
Explanation
The equation of circle in standard form is

We know the circle passes through (0,27/2), then

So the equation in the standard form is

Final Answer
1 yd is equivalent to 3 ft, so 7 times 3 is 21. 21 is greater than 20, so your answer is 7 yd.
2/3km........2/3 h
x km............1 h
x=2/(2/3)=6 km/h
Step-by-step explanation:
collect the like terms 12x+4=9x+8
12x-9x=8-4
3x=4
X=1.333