Answer:
i believe the bottom is a <em>irregular quadrilateral </em>and the first one is a <em>parallelogram </em>
Step-by-step explanation:
Circumference of a circle = 2πr
C = 2π(4)
C = 8π
C = 8 * 3.14 = 25.12
In short, Your Answer would be 25.12
Hope this helps!
Answer:
<em>The answer is a = 6.</em>