Properties of Matter Part 3

A plane is in level flight at constant speed and each of its two wings has an area of 40m2. If the speed of the air is 180‌km∕h over the lower wing surface and 252‌km∕h over the upper wing surface, the mass of the plane is ______kg. (Take air density to be 1‌kg‌m−3 and g=10ms−2 )