Question: 
Write a function to caluclate the area of a tetrahedron.


Model's Code:
def area_tetrahedron(a):
    return (a**2 * (3**0.5)) / 2



Sample Correct Code:
import math
def area_tetrahedron(side):
  area = math.sqrt(3)*(side*side)
  return area


Asserts:
assert area_tetrahedron(3)==15.588457268119894
assert area_tetrahedron(20)==692.8203230275509
assert area_tetrahedron(10)==173.20508075688772


Tests:
Test 1 of 3: FAIL: AssertionError()

Test 742 of 974: 562/742 (75.74123989218329%): failed