Question

The distance of the point (4, 3, 8) from the Y-axis is ______.

Options

• 5

• `sqrt(34)`

• `4sqrt(5)`

• `sqrt(73)`

Answer 1

The distance of the point (4, 3, 8) from the Y-axis is `4sqrt(5)`.

Explanation:

Distance of (4, 3, 8) from the Y-axis is 

`sqrt(x^2 + z^2) = sqrt(4^2 + 8^2)`

= `sqrt(16 + 64)`

= `sqrt(80)`

= `4sqrt(5)` units