input: Write a function to compute the area of a circle given its radius. The function should return the area rounded to two decimal places.
  assert area_circle(5) == 78.54
  assert area_circle(10) == 314.16
  assert area_circle(0) == 0.00
  assert area_circle(1) == 3.14
output: def area_circle(radius):
      return round(3.14159 * radius * radius, 2)