Question

A 3-D object made of 2 cm × 2 cm × 2 cm cubes is dipped in paint. . If the painted object is separated into individual cubes, then the total area of the unpainted surfaces will be *

Answer 1

The answer is "
`48 \ cm^2`"

Explanation:

Area of every face:

`A=bh\\\\`

`=2* 2\\\\=4 \ cm^2\\`

count overlaps and times by 2:

So,

`\to 6 * 2= 12`

There are 12 unpainted faces each face is
`4 \ cm^2\\\\`

`\to 12 * 4 \ cm^2\\\\\to 48 \ cm^2`