Answer: 9
Step-by-step explanation:
Sorry the pi sign looks weird. The formula for area of a circle is 
, so we have to substitute the radius with 3. The square of 3 is 9, so the answer is 9pi.
Answer:
for A it's the first answer and for b 15826
3x+y=27, when x=7
1. Replace any x in the equation with 7.
3(7) + y=27
2. Simplify.
21+y=27
3. Solve for y.
y=27-21
y=6
4. Check your answer by inserting x=7 and y=6 into the original equation.
3(7) +6=27
21+6=27
27=27
Yes, it checks.
Answer:
A
Step-by-step explanation:
