Question

In this diagram use pythagoras theorem to calculate the length of the marked side

Answer 1

Explanation:

Hyponues²= Base²+Height ²

20cm²=Base²+15cm²

400cm-225cm=H²

175=H²

5√7 Answer

Answer 2

`5√(7)`

Explanation:

using Pythagoras theorem

`d = \sqrt{ {20}^(2) - {(15)}^(2) } \\`

`d = 5 √(7)`