Viết phương trình mặt phẳng tiếp xúc với mặt x 2
2
+ y
2
4 − z
2 = 1 tại điểm M ( 2,−2,1).

Scenario: 2 storage sheds are to have the same area. 1 is square and the other is rectangular. the rectangular shed is 4 meters wide and 9 meters long question: how large is one side of the square shed in meters?