Question

What is the length of a diagonal of a cube with a side length of 1 cm?

2cm
3 cm
4 cm
5 cm

Answer 1

The length of diagonal is
`√(2)`cm

Explanation:

We are supposed to find the length of a diagonal of a cube with a side length of 1 cm

Length of side of cube = 1 cm

Formula of length of diagonal of cube =
`√(2)a`

Where a is the side of square

a = 1 cm

Substitute the value of a in the formula :

So, Length of diagonal of cube =
`√(2)(1)=√(2)`

Hence The length of diagonal is
`√(2)`cm