Let's consider that 23.5 is 100% of rainfall.
23.5 ..... 100 %
21.2 ..... x %
Calculate x:

, which is around 90.2%.
The percent of decrease is 100 - 90.2 = 9.8 %.
Tan A = 18/27
Tan A = 2/3
Tan A = 0.6667
Tan B = 27/18
Tan B = 3/2
Tan B = 1.5000
<em>Depending on what you trying to say...
</em>
Six times a length (w) is 6w
or
Six times a length is w, is 6l=w
<em>But I can't tell because of the typo
</em>
Hope this helps!
Answer:
3/10 or 0.3
step-by-step explanation:
2/5 x 3/4
2 x 3
6
6/4
4 x 5
20
6/20
3/10