What's the floor area of a cuboid tank 6m long, 5.5m wide and 2m high?

What's the floor area of a cuboid tank 6m long, 5.5m wide and 2m high?

6x5.5=33 m2

A rectangular wooden box is nine tenths of a meter long, two-thirds of a meter wide and one-third of a meter high. How to place this wooden box? What is the minimum floor area?

Length, width and height
The width * height side is used to place, and the floor area is the smallest
Then (2 / 3) * (1 / 3) = 2 / 9

There is a cuboid wooden box, which is 0.7 meters long, 0.5 meters wide and 0.3 meters high. How to put it? This wooden box occupies the smallest area? What's the minimum square meter?

0.5 × 0.3 = 0.15 (square meter); answer: let the 0.5 × 0.3 side of the wooden box touch the ground, and the minimum floor area is 0.15 square meter