We know that formula for circumference is 2πr
Since we have circumference of 2π, that would means 2π = 2πr.
We need to solve for r. We can divide both sides by 2π:
2π / 2π = 2πr / 2π
1 = r
So radius is 1.
Now the formula for area of circle is πr². So plug in r=1 and that would be
π(1)²
π
So area of circle is π.
Hope this helps.
Answer:
Value of b = 14
Step-by-step explanation:
The detailed calculations with steps is shown in the attachment.
Answer:
a
Step-by-step explanation:
multiply the radius of 3 by 3 to get 9, and multiply the height of 4 to get 12. the radius of cylinder a = 9 and the height of a = 12 therefore if you fill cylinder b up 3 times you will fill up a.