What is the square feet of 6x4x2?

Answer 1

As you have three numbers multiplied together that would produce a VOLUME.

I guess you are asking for the surface area of a cuboid 6 by 4 by 2.

Surface area = 2 × (6 × 4 + 4 × 2 + 2 × 6) = 88 square UNITS

To convert this to square feet you will need to find the ratio between the UNITs the 6, 4, and 2 are measured in and 1 FOOT, then square this ratio and use it to convert the 88 square UNITS to square FEET

eg if the cuboid was measures in inches:

12 in = 1 ft

→ 12² in² : 1 ft²

→ 88 sq in = 88/144 sq ft = 11/18 sq ft ≈ 0.61 sq ft

eg if the cuboid was measured in metres:

1 ft = 0.3048 m

→ 1 ft² : 0.3048 m²

→ 88 sq m = 88 ÷ 0.09290304 sq ft ≈ 947 sq ft

now, I hope, you can see why IT IS NECESSARY TO ALWAYS SPECIFY THE UNITS MEASURED when you want an answer in a specific unit, especially as all the measurements may NOT be in the same unit - eg in GCSE Maths they are fond of giving some measurements in one unit, eg metres, and others in another, eg centimetres, and asking for an area in, say, square metres.

If the cuboid was all measured in feet, then the ratio is 1:1 and it has a surface area of 88 sq ft.

Answer 2

It is not possible to give a sensible answer to the question. The fact that there are three measures in a question about area suggests that the shape might be a triangle. However, a triangle with sides of 6, 4 and 2 units cannot exist.
Furthermore, the answer would depend on the units used for 6x4x2. It should be obvious to anybody that the answer for 6 metres x 4 metres x 2 metres will be very different to that for 6 yards x 4 yards x 2 yards, for example.