Question

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

Answer 1

Answer:

$5\sqrt{7}$

Step-by-step explanation:

using Pythagoras theorem

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

$d = 5 \sqrt{7}$

Answer 2

Step-by-step explanation:

Hyponues²= Base²+Height ²

20cm²=Base²+15cm²

400cm-225cm=H²

175=H²

5√7 Answer