The equation for the area of a circle is:

. Insert 9 as your radius (r) into the equation and solve:
\pi 9^2 = 254.469
The square root of 58 is around 7.6
The entire number is, 7.61577310586...
Answer:
3
Step-by-step explanation:
subtract 3y from both sides
add 9 to both sides
3y=12x+9
divide everything by 3
y=4x+3
y-intercept is 3
69.78+26.73-100 just use your calculator and you will out and that a hint