Respuesta :

You have to assume this is a trapezoid. Otherwise you need Heron's formula.
L1 = 2.7 km
L2 = 6.9 km
h = 2.2 km
Area = (L1 + L2)*h/2
Area = (2.7 + 6.9)*2.2 / 2
Area = 9.6 * 2.2 / 2
Area = 10.56 km^2 <<<< answer