Idk but i could use some points so help a brother out!
Answer:
A delta is the triangular deposit at the end of a river (where it empties into another body of water). As the river is flowing, it carries sediment and water downstream and deposits it. The delta itself is formed by the sediment building up into a landform.
<h3>As we know that sum of three angles of triangle is 180º.</h3>
we have


<h3>

The angles a and c are equal so,</h3>
- cb = ab. [ sides opp to equal angles are equal]
so x is also 16
<h3>

Now we have two side we can easily find the third side by P.G.T</h3>
<h3>so the r is root 512 and x is 16.</h3>
Hope it helpa
Australia/Oceania is the smallest continent