Question

Explain how to get to answer

Answer 1

The length of CD is

"The Right Triangle Altitude Theorem says that the product of AD times DB must equal the length of
`CD^(2)`. Since 4 * 6 = 24, CD must be
`√(24)`.

`AC^(2) = AD^(2) + CD^(2)`

`AC^(2) = 40`

`AC = √(40) = 2√(10)`