John is a treasure hunter. He found this odd-looking gem as shown above. He measured two sides of the gem and he needs to know the area of the gem. Can you help him?
Their bases are 12 and 10, and the side of a red triangle is 10 units.
Yellow Δ area = √3 => 3√3
Red Δ area = => => 25√3
White trapezoid area => 33√3
Total area = => => 61√3 square units