Answer:
This isn’t really a valid equation, so I’m guessing you forgot to type something.
Step-by-step explanation:
Diameter- The line that goes through the circle is the diameter to find the diameter take the radius and multiply it by two
Circumference- Take the radius divide by two and multiply by pi which is 3.14
Answer:
x = -10
Step-by-step explanation:
9 x -10 = -90